Chapter 4

The group walks together on a sidewalk, shivering and unable to get warm.

Fred walks up the front steps to a giant mansion. "Fred. Where are you going?"

Fred hesitates, but picks up on the confusion emanating from the group. "Welcome to mi casa. That's French for 'front door'"

"Fred, 'mi casa' is Spanish for 'my house'," Tadashi said.

"Whatever," Fred shrugged Tadashi's comment off.

"If you don't speak a language, then just use English." GoGo said.

"Where would be the fun in that?" Fred asked.

"Is being an idiot fun?" GoGo said. "Because that's what you sound like."

Fred mock-pouted.

"It's really not," Honey Lemon said.

"Listen, nitwit," GoGo growled. "A lunatic in a mask just tried to kill us. I'm not in the mood for-"

"Welcome home, Master Frederick," a butler opened the front door next to Fred.

"Heathcliff, my man!" Fred greeted. Fred regarded his friends who were staring at him in surprise. "Come on in, guys. We'll be safe in here." Fred fist bumped his butler and walked in.

Baymax trailed behind everyone and fist bumped Heathcliff. "Balalala." Baymax said, waving his fingers in the air.

Everyone stared at multi-million dollar mansion.

Tadashi whistled. "I want a house like that!"

"I wish working in a cafe earned that much money," Aunt Cass said, dreamily.

The living room would have plenty of space to fit all of my equipment." Hiro said.

Tadashi laughed.

Fred takes the group into what is obviously his comic book room. There were so many action figures, paintings, and decorations.

"If I wasn't just attacked by a man in a kabuki mask, this would probably be the weirdest thing I've seen today," Wassabi commented, staring at a painting of Fred with wings, a buff body, and a spear in hand while riding a white tiger.

"This is Heaven on earth for a comic book nerd." Wasabi commented.

"Fred, why don't you write and design comic books for fun?" Hiro asked. "You obviously enjoy reading comics. Why not create your own stories and characters?"

Fred considered the question for a minute.

"That's actually a good idea." Wassabi said.

"It'll certainly be entertaining." Honey agreed.

"Plus it'll give you plenty of stories to share, besides the stories in your favorite comic book franchises." Tadashi added.

"I would be honored." Fred's eyes widened. "I just need some inspiration."

"Write about what you know." Honey suggested.

Hiro sits down at a table and starts drawing a picture.

Baymax walks up to him. "Your body temperature is low."

"Yeah," Hiro says, distractedly. Baymax leans over Hiro and hugs him from behind, using a heating program to warm Hiro. Hiro decides to roll his eyes and ignore the robot. Fred and the others decide to lean against Baymax for warmth.

Hiro finishes his drawing and regards his friends. "Does this symbol mean anything to you guys?"

"Yes! It's a bird!" Fred answered, pointing at the picture.

"No, the guy in the mask was carrying something with this symbol on it," Hiro said, frustrated.

"Apprehending the man in the mask will improve Hiro's emotional state," Baymax confided.

"It's not going to improve mine," Tadashi muttered. "At this rate, apprehending the man in the mask will improve my chances of having a heart attack."

"You worry too much," Hiro told Tadashi.

"Why don't we just call the police?" Wassabi inquired.

"Because calling the police is lame!" Fred said. "That's not what a hero does."

"What are we going to do about it?" Honey asked.

"Only time will tell." Hiro said. Everyone looked at him. "No pun intended."

"That was a good one." Fred complimented.

"'Apprehend him'? We don't know who he is," GoGo said.

"I have a theory," Fred interceded. "Don't you guys get it? The man in the mask who attacked us is none other than… Alistair Krei." Fred pointed at a picture of Krei on his TV screen.

"That's creepy," Honey Lemon said. "You said that before we watched this part."

"No, it isn't. I'm just consistent with my theories," Fred said to Honey Lemon.

"What?" Hiro asked, doubtfully.

"Think about it. Krei wanted your microbots and you said no. Rules don't apply to a man like Krei," Fred said.

"There's no way. The guy is too high profile," Hiro disagreed.

Tadashi thought about both sides of the argument. Krei had motivation for stealing Hiro's microbots, but his brother has a point. Krei couldn't simply sneak out at night without getting noticed. This mystery is a real head-scratcher.

"Then who was the guy in the mask?" Honey asked, tentatively.

"I don't know. We don't know anything about him," Hiro said, rubbing the back of his neck.

"His blood type is ab-negative," Baymax said. "Cholesterol levels are-"

"Baymax, you scanned him?" Hiro asked, cheerfully.

"I am programmed to assess everyone's healthcare needs," Baymax answered.

"Tadashi, you're a genius," Hiro said, excitedly. "You programmed in Baymax the exact clues we need to find the masked man."

"Thank you," Tadashi said. "The lack of sleep required to invent and program Baymax was definitely worth it."

"You can say that again," Aunt Cass said. "Baymax will certainly come in handy when I'm not around to take care of the two of you." Aunt Cass pointed at her two nephews.

"Baymax needs to worry about one of us," Tadashi said, pointing his thumb at Hiro.

"Says the guy who ran into a burning building. Even I'm not crazy enough to do that," Hiro retorted.

"You did try to apprehend a villain all by yourself," Tadashi shot back good-naturedly.

"I had Baymax with me!" Hiro argued.

"You would have been killed if Honey, GoGo, Fred, and Wasabi hadn't shown up to save you," Tadashi countered.

Hiro was about to respond, but didn't have an angle to argue back.

"He's got you there, Hiro," Fred said, laughing.

Hiro rolled his eyes.

"Yes! I can use the data from your scan to find him," Hiro cheered.

"You'd have to scan everyone in San Fransokyo. And that might take, I don't know, forever," GoGo said.

"That's true," Tadashi said.

"There might be another way to find him faster," Hiro said.

"I just have to look for another angle. Got it! I'll scan the whole city at the same time. I just have to upgrade Baymax's sensor," Hiro looked at Fred's action figures and got an idea. "Actually, if we're going to catch this guy, I'm going to need to upgrade all of you."

"Upgrade who now?" Wassabi asked.

"Those who suffer a loss require help and support from loved ones," Baymax said.

"I like where this is heading!" Fred said, enthusiastically.

"I don't like where this is heading!" Tadashi said.

"Why not?" Fred asked. "It's awesome!" Fred was silent for a moment, thinking. "If we're going to become super heroes, I'm going to write comic books about us!" Fred cheered.

"This is dangerous!" Tadashi said. "Being a hero isn't like what you see in comic books or movies. Heroes can die."

"Name one fictional hero who died," Hiro said, testily. "Any hero."

"Xena, for one," Tadashi said.

"Good point," Honey agreed.

"Name another," Hiro said.

"Peter Parker in 'The Amazing Spider-Man' comic books," Tadashi answered.

"Fair argument," Wassabi said.

"Let's just watch and see what happens," Hiro suggested. "Maybe it won't be that bad."

"We can't go against that guy! We're nerds!" Wassabi argued.

"Hiro, we want to help, but we're just… us," Honey said.

"No, you can be so much more," Hiro contradicted.

"Tadashi Hamada was our best friend. We're in," GoGo said.

"Can you feel it? You guys, do you feel this? Our origin story begins. We're gonna be superheroes!" Fred cheered.

"Arms up," Hiro said, scanning the group. "The neurotransmitter must be in the mask. We get the mask and he can't control the bots. Game over."

"I'm not gonna lie, that's a good plan. Short and simple," Tadashi said. "I hope you guys think of a strategy on how to fight him effectively. Without a strategy, the plan won't work."

Everyone considered this for a moment. Tadashi is right. If they just go in the fight feeling trigger-happy, the group will be overwhelmed quickly.

"The man in the mask definitely has the upper hand with those microbots," GoGo said.

Hiro helps everyone to design their superhero costumes. Honey's weapon included balls of sticky goo that can immobilize a person. Heathcliff agreed to pretend to be the man in the mask by letting the group "attack" him. GoGo's costume included having wheels for feet. Fred's costume is a blue lizard that can jump high into the air and breathe fire. Wasabi's costume included lazer hands that can cut through anything. Hiro created red armor for Baymax for extra protection.

"I have to admit, those costumes are pretty cool," Tadashi said, feeling proud of his friends and brother.

"I think we should all design costumes and be superheroes!" Fred suggested.

Tadashi groaned. He thought the costumes were impressive, but he couldn't shake the feeling that something is going to go wrong. In comic books, movies, and TV shows, heroes often get hurt and lose people they love. Being a hero came hand-in-hand with sacrifice and he didn't want that for his brother. Hiro has lost enough as it is. Aunt Cass is the only family Hiro has, since Tadashi and Hiro's parents died a long time ago and his future counterpart isn't around anymore to look after Hiro.

It was no secret that being a superhero came at a cost. The cost often involved the heroes loved ones and friends. The Green Arrow in the CW tv series is a perfect example of what it's like to lose people close to you. The Green Arrow lost his mom and dad. The Flash lost his mom and his dad was falsely convicted of murdering the mom.

Tadashi hoped that when they all went back to their time, Tadashi will remember this experience and change his decision to save Callaghan. He respects Callaghan immensely, but he couldn't make the same choice again. Not after seeing how much suffering it caused his family and friends, especially Hiro.

"Woohoo!" Fred cheered.

"I love it!" Honey said.

"Not bad," GoGo commented.

"Anybody else's suit riding up on them?" Wasabi asked.

"Hey, guys!" Hiro said. "Check this out." Hiro appeared, wearing his costume. "I'd like to introduce, Baymax 2.0."

"He's glorious," Fred commented.

"That's awesome, Hiro!" Honey said.

Tadashi thought the suit contradicted Baymax's huggable design, but other than that, he thought the suit looked amazing.

"Hello," Baymax greeted. Baymax noticed a butterfly and started chasing it.

Hiro stepped in front of Baymax. "Hold up. Focus."

"You changed something, didn't you?" Tadashi asked. "I know that look. That's a look you get when you're about to do something crazy."

"There's a look?" Hiro asked.

"Show them what you got, buddy. The fist, show them the fist," Hiro said. Baymax obeyed and shot a rocket fist at a wall.

"I knew it!" Tadashi said. "So much for Baymax being non-threatening."

"It's cool! It's not like I'm gonna use him to hurt anybody."

Tadashi groaned.

"Rocket fist make Freddie so happy!"

"That's just one of his new upgrades!" Hiro said, excitedly. "Baymax, wings."

"This is going to be a heart attack waiting to happen. Unbelievable," Tadashi said, putting his head in his hands.

"Come on!" Hiro smiled. "It's Baymax. He won't let anything bad happen to me."

Tadashi had to admit that Hiro has a point, but as much as he trusts Baymax, this whole situation made him nervous. Tadashi tried to keep an open mind about this. Maybe Hiro will get through this and be okay. Maybe this is what he needs to find closure.

Hiro climbs on top of Baymax's back and secures himself by attaching his magnetized hands and shoes to the magnets on Baymax's back. "Thrusters." he orders.

The rockets on Baymax's feet light up. "I fail to see how flying makes me a better healthcare companion."

"I fail to see how you fail to see that this is awesome!" Hiro says, enthusiastically. "Full thrust."

Hiro and Baymax shoot forward. The group watches and ducks when Baymax turns around flies high in the air. Hiro doesn't appear to have any control when they almost fly into a statue. Hiro and Baymax reach the San Fransokyo bridge and decide to take a breather.

"That was close," Tadashi said.

"No kidding," Aunt Cass said, biting her nails.

"Oh, man!" Hiro spoke. "Maybe that's enough flying for today."

"When has a rush with danger ever stopped you?" Tadashi asked. "You were more than happy to go back to bot fighting after we were arrested."

"I don't know," Hiro said, enjoying himself. This was the greatest thing he's ever seen!

"Your neurotransmitter levels are rising steadily," Baymax observed.

"Which means what…?" Hiro asked, dubiously.

"The treatment is working," Baymax said.

Tadashi smiled in relief. He's glad that his brother's future counterpart is starting to enjoy life again. He deserves to be a kid and have fun. Tadashi always tried to stay positive and happy when times were hard. Whenever Hiro was having a bad day, Tadashi would do everything in his power to get Hiro to loosen up and laugh. That's how their relationship works: Hiro often turns to Tadashi for advice and Tadashi does everything he can to help. Hiro makes him proud every day.

Baymax frees falls off the bridge and Hiro starts to scream. "Oh, no!" Hiro yelled. Baymax shoots off right before they hit the water. "Whoo!"

"My heart just jumped into my throat!" Wassabi said, who has a powerful fear of heights.

"Are you sure this is safe, Tadashi?" Honey asked.

"Baymax will take care of Hiro. Don't worry." Tadashi answered. "Trust me, if Hiro fell, Baymax would catch him."

"I'm glad you have so much faith in that robot." Aunt Cass said.

"I wouldn't have introduced him to you guys if I didn't." Tadashi said.

They fly through the city, performing loops and turns. Baymax appears next to a skyscraper and Hiro looks at his reflection in the glass.

"Yes!" Hiro cheers.

Hiro and Baymax sit on a statue, watching the sunset. "That was…" Hiro couldn't find the right word.

"Sick," Baymax finished for him. "It is just an expression."

"That's right, buddy," Hiro said. "I am never taking the bus again."

"I don't blame you," Tadashi said.

"Baymax trumps a bus any day!" Fred said.

"Your emotional state has improved," Baymax said. "I can deactivate if you say you are satisfied with your care."

"What?" Hiro said, obviously unhappy with the conversation change. "No, I don't want you to deactivate. We still have to find that guy."

"I almost forgot about that," Tadashi said. "As much as I don't want you near that guy, Hiro, I understand why you feel the need to catch him. If our places were reversed, I would do the same thing. I would make sure that guy is brought to justice."

Hiro felt a warm feeling in his chest after hearing his brother's words. Hiro doesn't always show it, but his brother is the most important thing in the world to him.

"So, fire up that super-sensor," Hiro ordered.

Baymax stood up and activated his super-sensor. "Functionality improved. 1000% increase in range. I have found a match on that island." Baymax pointed to the location of the man in the mask.

The scene changes to see Hiro, Honey, and GoGo riding on Baymax's back.

"Killer view," GoGo said.

"Yeah. If I wasn't terrified of heights, I'd probably love this. But I'm terrified of heights, so I don't love it." Wasabi said.

"Yup." Wassabi said. "I've been afraid of heights ever since I climbed a tree and lost my grip. I fell back first on the ground and had to go to the hospital, because broke my spine. I've never dealt with heights until seeing this alternate timeline."

"There. Baymax, take us in," Hiro said.

Baymax landed. The group walked around to find the front entrance. The group hears a noise and everyone starts throwing weapons at the attacker. Everyone opens their eyes to see that it's…

"That was a bird," Fred said.

Everyone started cracking up.

"That was good," Hiro said. "All that freaking out for nothing."

"The looks on your faces was great!" Tadashi laughed, wiping tears from his eyes.

"At least we know our gear works," Honey says, trying to relieve the tension.

It worked for everyone watching their future counterparts react. Tadashi started laughing to the point where he was crying.

Wasabi impatiently and sloppily cuts a hole in the wall. Everyone slowly steps inside.

"Worst hole cutting ever." GoGo comments.

Wasabi rolls his eyes.

"Six intrepid friends led by their leader, Fred," Fred starts singing. "Fred's angels, harnessing the power of the sun with the ancient amulet they found in the attic."

"'The amulet'?" Tadashi questioned.

"Where do you come up with these weird ideas?" Wasabi asked.

"I'm gonna use that as my theme song in the comic book I'm gonna write!" Fred said.

"The amulet is green. It's probably an emerald," Fred continued singing.

"Fred, I will lazer-hand you in the face!" Wasabi threatened.

"Shhh," Hiro said. "Any sign of him, Baymax?"

"This structure is interfering with my sensor," Baymax answered.

Honey looked to her right and saw that there is a door open. "Guys, you might want to see this."

They walk in the room to see dismantled equipment stacked on the floor.

"What do you think it is, genius?" GoGo asked.

"I'm not sure. But look," Hiro pointed at the bird symbol on a piece of the equipment.

Hiro and the group walk upstairs to find a large computer with a picture of Krei in the security footage. Hiro rewinds the footage to see that Krei invented a machine that defies the laws of transportation. A woman who is obviously the pilot enters a pod and prepares to launch the pod into the vortex. The pod enters the vortex, but communication with the pilot became disrupted and the portals went out of control.

"Oh, no!" Honey gasped.

"The government shutdown Krei's experiment," Hiro said.

"And he's using your microbots to steal his machine back," Honey added.

"The guy in the mask is Krei," Hiro said.

The man in the mask appeared behind group and threw a large piece of debris at them.

Tadashi's eyes went wide with fear.

Everyone gasped at the screen.

Baymax uses his body to protect the super-heroes. Everyone is coughing, but otherwise are uninjured.

"Baymax, get us out of here," Hiro said. "Go for the transmitter. Behind his mask."

"What's the plan?" Wasabi asked.

"Get the mask," GoGo answered.

"That's a goal, not a plan." Tadashi said.

"For real, what is the plan?" Wasabi asks loudly.

Everyone goes after the man in turn, but are unable to get the mask. The heroes weapons start working against them instead of benefitting them. The man in the mask manages to overwhelm them and prepares to crush them with a microbot hammer. Hiro and Baymax fly around and distract the villain. The masked man shoots his microbots upward and hits Baymax. Hiro falls off of Baymax and lands on the masked man. Hiro and the masked man fall down the stairs. Hiro takes a moment to overcome his dizziness and grabs the mask that fell onto the floor between him and the villain.

Hiro stands up and glares at the villain. "It's over, Krei," he says.

The man stands up and faces Hiro. The man in the mask is…

"Professor Callaghan?" Hiro recognizes the man's face and stares at him in disbelief.

"That's impossible," Tadashi said. "How in the world did he survive?"

"The explosion. You died," Hiro said, confused.

"I had your microbots," Callaghan said.

"But, Tadashi. You just let him die. He went in there to save you," Hiro said, in tears.

"That was his mistake!" Callaghan yelled.

"I guess he didn't want to be saved," Aunt Cass said, bitterly.

"So, I tried to save him and died for nothing," Tadashi said, angrily. Tadashi seemed to have lost all respect for his former professor.

Hiro flinched. Hiro knew what would happen next. Hiro knows himself well enough that he would never take losing his brother lightly. Hiro hoped that he wouldn't lose Tadashi's respect.

Hiro's face changed into a look of white-hot rage and hatred. "Baymax, destroy." Hiro said, darkly.

Tadashi's eyes widened at the screen. He had never seen that look on Hiro before. He never imagined that his death would break Hiro to the point of seeking revenge.

Tadashi turned to Hiro, who had his head in his hands, seemingly unable to watch himself kill Callaghan.

"Hiro…" Tadashi said, softly. Tadashi didn't know what to say. He put his hand on his brother's shoulder and put his arms around him in a comforting hug.

Hiro allowed Tadashi to hug him. Hiro hated seeing himself so broken and angry. Knowing that Tadashi is alive and well here in this time made Hiro feel a little better. Hiro buried his face in his brother's chest, unable to watch what happens next. Tadashi has always been so supportive and reassuring, even when he sees the worst side of Hiro.

"My programming prevents me from injuring a human being," Baymax protested.

"Not anymore," Hiro growled, removing the healthcare data chip.

"Do it, Baymax! Destroy him!" Hiro yells. Callaghan backs away in fear.

Tadashi held onto his brother, trying to shield Hiro from looking at the screen. Tadashi watched the scene with a growing fear for Hiro's emotional state. Killing Callaghan would destroy Hiro. Tadashi realized that he didn't really care what happened to Callaghan, because his former professor was so indifferent about being the cause of his death. The only thing that mattered to him now was Hiro.

Aunt Cass put her hand on Hiro's back. She knew Hiro's future self was wrong to try to kill Callaghan, but she couldn't say that she blamed him.

Baymax pursues Callaghan and shoots his rocket fists at him. Hiro's team desperately tries to stop Baymax.

"Stop! He's getting away!" Hiro yelled.

The mask falls out of Hiro's grip and lands within reach of Callaghan, who picks it up and uses the microbots to escape. Honey picks up the healthcare data chip and inserts it into Baymax, bringing him back to normal.

"My health care protocol has been violated. I regret any distress I may have caused," Baymax said.

"You can look now, buddy," Tadashi told Hiro. "It's over. Callaghan got away."

Hiro looked up at the screen, the guilt fresh in his mind. The guilt was lessened by his relief that he is not a murderer.

"How could you do that? I had him!" Hiro barked at his team.

"What you just did, we never signed up for," Wasabi scolded.

"We said we'd catch the guy. That's it," GoGo said, angrily.

"I never should have let you help me!" Hiro snapped. "Baymax, find Callaghan."

"My enhanced scanner has been damaged," Baymax admits.

Hiro growled in frustration. "Wings." Baymax flies upward with Hiro on his back. "Fly!"

The group yells after him to come back, but Hiro ignores them. Hiro opens his garage door and leads Baymax inside.

"Your blood pressure is elevated," Baymax said. "You appear to be distressed."

"I'm fine," Hiro growled. "There. Is it working?"

"My sensor is operational," Baymax confirmed.

"Good," Hiro said. Hiro tries to open Baymax's access port.

"Are you going to remove my healthcare chip?" Baymax asked.

"Yes," Hiro said. "Open!"

"My purpose is to heal the sick and injured," Baymax said.

Hiro feebly tries to open the access port. "Baymax, open your access port."

"Do you want me to terminate Professor Callaghan?" Baymax inquired.

"Just open!" Hiro shouted, ignoring the question.

"Will terminating Professor Callaghan improve your emotional state?" Baymax asked.

"Yes! No! I don't know!" Hiro said, uncertainly.

"Don't do this." Tadashi prayed.

"Is this what Tadashi wanted?"

"This is the last thing I would have wanted." Tadashi admitted.

"It doesn't matter!" Hiro yelled, trying as hard as he can to open Baymax's access port.

"Tadashi programmed me to aid and-" Baymax was cut off.

"Tadashi's gone!" Hiro banged his fists against Baymax's chest.

Aunt Cass started crying her eyes out at this point. She never wanted this to happen to Hiro. Seeing him like this pulled at her heartstrings.

Honey, Wasabi, GoGo, Fred, and Tadashi had heartbroken expressions on their faces. Hiro means so much to all of them. It isn't fair that Hiro is so depressed. Tadashi's death isn't fair. It isn't right that someone as good as Hiro was hit so hard with grief.

Hiro didn't look surprised at his reaction. He doesn't like this feeling, but the hatred his other self feels towards Callaghan doesn't shock him in the least. Callaghan deserves to die for killing Tadashi. But unlike his future counterpart, he doesn't want to be the one to end Callaghan's life.

"Callaghan deserves to die for killing you," Hiro said.

Everyone looks startled.

"You don't mean that," Tadashi said.

"Yes, I do," Hiro said. "I don't want to be the one to kill him, but he shouldn't be allowed to get away with murder. I don't care what his motivation is for starting the fire."

Nobody knew what to say to that.

"Tadashi's gone," Hiro said, beginning to cry.

"Tadashi is here," Baymax said.

"No. He's not here," Hiro denied.

A video recording appeared on Baymax's stomach where Hiro pressed his forehead. "This is Tadashi Hamada. And this is my first test of my robotics project." The microphone feedback reverberated in the room. "Stop! Stop! Stop! Stop! Stop! Stop!"

Hiro gasped in alarm.

"The seventh test of my robotics project," Tadashi continued. "What? What?" When Tadashi turned Baymax on, Baymax's arms started flapping uncontrollably. "Stop!"

Tadashi appeared again, looking tired and his hair was unkempt. "Tadashi Hamada again, and this is my 33rd test of my robotics project." All the lights go out.

Everyone laughed. "That was you?" GoGo asked. "I wondered how the lights went out that night. SFIT didn't have electricity for at least a day."

"Sometimes you have to fail one hundred times in order to succeed," Tadashi answered.

Tadashi pulled out a flashlight in front of Baymax's screen. "I'm not giving up on you. You don't understand this yet, but people need you. So, let's get back to work."

Hiro looked down for a moment and looked back at Baymax's screen, teary-eyed.

"This is Tadashi Hamada, and this is my 84th test," Tadashi yawned. "What do you say, big guy?"

"Hello, I am Baymax, your personal healthcare companion," Baymax spoke.

"It works?" Tadashi asked. "He works! I knew it! I knew it! I knew it!" Tadashi said, gleefully. "I can't believe it!"

Hiro watched Baymax's screen with a teary smile.

Hiro smiled at the scene. "You're such a big nerd." He joked.

Tadashi ruffled his hair playfully.

"I'm glad that you stuck with inventing Baymax," Hiro said. "Baymax will save lives one day, thanks to you."

Tadashi gave Hiro a grateful smile.

"Okay. Big moment here. Scan me," Tadashi said.

Baymax obeyed. "Your neurotransmitter levels are elevated. This indicates that you are happy."

"I am. I really am. Wait until my brother sees you. You're gonna help so many people, buddy. That's all for now. I am satisfied with my care," Tadashi's voice stopped.

Hiro put his hand on the screen where Tadashi's face paused on Baymax's screen. Hiro wiped his eyes, still smiling. "Thank you, Baymax."

Baymax didn't respond.

"I'm so sorry," Hiro apologized.

Wasabi bursts out crying now. "That's so sad and beautiful! I… I get emotional sometimes."

Fred puts a hand on Wasabi's shoulder in understanding.

Tadashi hugs Hiro and Hiro returns the hug. Aunt Cass wraps them both in a group hug. "I love you both." she says.

"Love you, too, Aunt Cass," Hiro and Tadashi say in unison.

"I guess I'm not like my brother," Hiro says, looking ashamed.

"Don't beat yourself up, Hiro," Tadashi said. "Everyone makes mistakes."

"Hiro," GoGo appears behind Hiro. The team follows her in the garage.

"Guys, I… I…" Hiro faltered.

GoGo understands what he's trying to say and pulls him into a warm embrace. "We're going to catch Callaghan and this time, we'll do it right."

"Maybe don't leave your team stranded on a spooky island next time," Wasabi said.

Hiro facepalms himself. "Oh, man."

"Nah, it's cool. Heathcliff picked us up in the family chopper," Fred said.

Tadashi turned to his friends and mouthed the words 'thank you'. Tadashi wanted to thank his best friends for being so nice to Hiro. Hiro had a hard time making friends because of his big brain. Many people Hiro's age felt threatened or intimidated by Hiro's intelligence. Tadashi is glad that his own friends accepted Hiro and now his little brother didn't have to be lonely anymore with only Tadashi to talk to.

"Hiro, we found something you should see," Honey said, holding a hard drive in her hand.

Hiro plugs the hard drive into his computer and the security footage appears on the monitor.

The security footage reveals Callaghan trying to attack Krei. "Krei, you did this!" Callaghan is held back by guards. "You knew it wasn't ready!"

"Callaghan? He was there?" Hiro asked.

"He was such a good man. What happened?" Honey asked.

"I don't know. But the answer's here somewhere," Hiro rubbed his chin.

"Wait, wait! Stop," Honey said. "There he is."

"With the pilot," Hiro said. "Hang on." Hiro fast forwards the footage and zooms in on the name on the pilot's helmet. "The pilot was Callaghan's daughter. Callaghan blames Krei."

"I didn't know that Abigail died like that," Wasabi said.

"I wondered why he spoke of his daughter in past tense when I first met Callaghan," Hiro said.

Aunt Cass felt a slight twinge of sympathy for Callaghan. She saw her own reaction when she lost Tadashi and wouldn't wish that on Callaghan, despite the fact that he's the reason Tadashi died in the future timeline.

Tadashi felt resentment and compassion for Callaghan. He resented Callaghan, because the college professor didn't care that he started the fire that killed him in the future timeline. Tadashi felt compassion for him, because Abigail is the only family he had and now she's gone. Tadashi understood why Callaghan would feel hatred towards Krei, the man responsible for the death of his only living family member. Tadashi wondered if he would feel differently if he were in Callaghan's shoes. How would he feel if someone put Hiro in so much danger? How would he feel if he lost Hiro and never saw his brother again? Tadashi flinched at the thought.

"This is a revenge story," Fred added.

"So, what are we waiting for?" Hiro put his helmet on.