A/N: I hope you all enjoy this chapter. The final battle is upon us!

"Professor Callaghan is what?" Honey Lemon said, confused.

"He's not dead, guys." Hiro said. They were all sitting in the garage, talking about the plan. Today was the big day, and all of them had to know what was going to happen. "He's alive, and he started the fire."

"It's true." Tadashi said. "I was there, and I saw it all."

"Okay, but why would he?" Gogo asked chewing on gum.

"You guys know about his daughter right? Abigail?"

"Yeah," Wasabi said. "She died a couple of months back."

"No, she didn't." Hiro said. "There was a project called Silent Sparrow that Krei was funding, and they were basically building a teleportation device. Krei cut corners on it, and brought people in to see it too soon. Abigail was supposed to be the first woman to go through there, but it exploded right after she entered."

Hiro looked at all the shocked faces.

"She's alive though!" Hiro said. "In the portal. Kind of like an alternate dimension."

"Can we save her?" Honey Lemon asked.

"Yeah, we can. And we can do it today." Hiro said. "Callaghan is planning to get revenge on Krei. He's been rebuilding a portal, and he's gonna use it to tear Krei-tech down. If we stop him, we can get her out."

"Wait- today?" Wasabi said. "As in, like right now?"

"He should be attacking the building in about an hour." Hiro said.

"We finally get to face off against the super villain!" Fred yelled. "Yes! I can't wait."

"In the past…" Wasabi said. "Did any of us, you know, die?"

"No, no. Every will be fine as long as you listen to me." Hiro said. "The micro bots can be sucked up by the portal. If you can break them apart-"

"Then Callaghan will run out." Tadashi said, nodding. "That could work."

"It worked last time." Hiro said, before looking out at all of them. "I know this is scary, and I know none of you ever really set out to be heroes, but we can do this. We can help people, and we can save Abigail."

"And we're super heroes." Fred said. "Don't forget that."

"Yeah, and we're superheroes." Hiro said.

"We've got this." Gogo said. "Woman up, guys!"

"You know, that could be a really good catchphrase." Wasabi pointed out.

They got there at the perfect time. Landing on top of the roof, Hiro and the team all got into positions. Krei and Callaghan were currently speaking, with Krei being held in the air by the micro bots. Hiro thought it best to interrupt.

"Professor Callaghan!" Hiro called. "Listen to me!"

The man raised his mask, anger apparent on his features. "Why are you so hard to kill!?"

"Abigail is alive!" Hiro said, ignoring his comment. "We can save her."

"No!" Callaghan said. "I am not falling for your games, little boy. I will avenge her death."

"Uh, Hiro?" Wasabi said, grabbing the boy. They all looked up and saw the teleportation device forming. Hiro sighed.

"You will watch everything you built fall apart!" Callaghan yelled at Krei, before bringing the man close to his face. "And then it's your turn."

The teleportation device went online, and the building began falling upwards. Pieces of concrete and glass were flying through the air, just like Hiro remembered.

"Attack his micro bots!" Hiro yelled. They'll be sucked up, too! Make sure he has none left!"

"Right!" Honey Lemon said, before they all dove to the ground to begin their attack.

"What are you going to do?" Tadashi said, gabbing Hiro's arm.

"I'm going to distract Callaghan. You get Krei out!"

Tadashi looked at his brother before hugging him. "You stay safe."

"I will." Hiro replied, before Tadashi let him go. He nodded at his brother, before flying off on Baymax.

"Are you still nervous, Hiro?" Baymax asked as they flew.

"Yep." Hiro said.

"I am too." Baymax replied, before flying through the Micro bots Callaghan was standing on, and catching him midair.

Callaghan glared, and sent micro bots to hit Baymax, which caused him to let Callaghan go. Callaghan was caught himself.

As Baymax recovered, Hiro looked to see how his friends were doing.

And it was going to same as last time. Wasabi was stuck in between to bits of building. Gogo was trapped in a sphere of micro bots. Honey was avoiding being stabbed by micro bots, and Fred was being pulled apart.

Hiro fell almost into panic as he searched for Tadashi, so much so, that he wasn't paying attention to what was going on. Baymax was hit again by Callaghan, causing Hiro to go flying. He almost fell into the portal, but grabbed on to a loose piece of cable.

Baymax was being covered with the micro bots, leaving Hiro where he was.

"Guys! Where's Tadashi!" Hiro said frantically.

"I don't know!" Honey said. "No one does! Ah!" She said, and Hiro realized that they were all in their own desperate situations.

"Guys!" Hiro said. "Look from another angle! Use those big brains of your and make a way out!"

That was all he needed to tell them. He watched as each and every one of them thought their way out, and he smiled proudly.

"Remember! Get the micro bots! They'll fall into the portal!"

Hiro took his attention off of his friends, still trying to search for his brother.

"Tadashi!" He called. "Where are you!?"

"Only saving your butt." The sound of his brother's voice said, and suddenly, he heard Callaghan yell. He looked over, to see that Tadashi had jumped him.

"Grab the mask!" Hiro said. "It has the neurotransmitter in it!"

Tadashi did what he was told, and he got the mask, making everything fall.

Including the portal.

"Baymax!" Hiro yelled, seeing the thing come close to him. The robot flew and grabbed him, getting him out of the way as it fell.

It was a mess, just like last time. Dust and pieces of building were everywhere, and the sky was dark, blocked by all the dust.

Fred grabbed Callahan first, making sure he didn't try to escape. It took a few moments for the portal to be clear of debris, which marked Hiro's chance to go in

"Wait!" Tadashi said, grabbing his arm. "What are you doing?"

"Abigail is in there!" Hiro said. "You can still sense her, right Baymax?"

"Affirmative." Baymax said.

"I'm going in there to get her."

"What?!" Tadashi said. "No, no-"

"I told you this is how I did it last time."

"The portal is destabilizing!" Krei said. "You'll die!"

"I won't!" Hiro said. "Not if you let me go!"

"I can't let you do this Hiro!" Tadashi said. "I want you safe."

"I can't let Abigail die!" Hiro yelled. "She is alive in there! Someone has to help!"

Tadashi was shocked at his brother's words, so much so that his grip was loosened just a bit, enough for Hiro to slip out of it.

"Hiro!" Tadahsi yelled.

"I'll be back!" Hiro said, climbing on Baymax. "Go!"

"Ca-can he really get to my daughter?" Tadashi heard Callaghan yell. But he did not answer. He was too busy watched his kid brother who he had promised to protect disappear into the portal.

Hiro felt himself shaking as Baymax expertly moved through the Krei-trech debris. He was almost there, almost through this fight. If he could just protect Baymax, then they would be okay.

"Shall you lead me through the debris just as last time?" Baymax asked, when they got to Abigail's pod.

"Yeah." Hiro said, climbing on top of the pod. He gulped, and took a deep breath.

"I'm ready." Hiro said.

There was much less debris this time around, which made is a bit easier, and Hiro remembered not to look away as they made it through the worst part of it all. He stared at the opening at the end, determined to get back.

"Oh no." Baymax said, and Hiro turned around.

"What?"

But that answer was obvious. A new hole was seeming to form around them, and Hiro was sure that they were too late and the portal was closing, but it was a dark blue color. A color that was familiar.

It was also sucking them in.

"No!" Hiro said, noticing that the pod did not move, but Hiro and Baymax did. It was like it only was going after them.

"I do not know what this is. It is an inorganic matter." Baymax said.

"We can't get sucked in there!" Hiro yelled. "We have to get Abigail home!"

Baymax used his thrusters, and grabbed Hiro as the boy lost his grip on the space shuttle. He was trying to fly away, but the thrusters were not working.

"Use the fist!" Hiro said, "Get her out of here!"

"This does not change the fact that we will die." Baymax said.

"I know!" Hiro said. "There isn't another option!"

"I do not want you to die, Hiro."

"I don't either, Baymax. But she's our patient. She is our only concern."

"I am sorry it has come to this, Hiro."

"Yeah, buddy." Hiro replied, feeling his eyes water. "Me too."

Baymax slowly raised his fist, and launched it, sending Abigail's pod moving forwards. Baymax then let his rocket thrusters die, and they fell backwards, into the endless blue portal.

The portal's destruction happened in a flash. One second, it felt like the air itself was being sucked away, and the next, everything was fine.

Tadashi jumped up, eager to see his brother and Baymax.

But all he saw was a pod.

"Hiro?" Honey Lemon said, standing up as well, but gasping as she saw the simple pod laying on the ground.

Tadashi ran to it, looking around to try and find anything that shows his brother was okay. He sunk to his knees when all he saw was the closed glove that Baymax wore.

He didn't notice that all of his friends had rushed to the scene with him, or that they all tried to give their consolations with their own tears in their eyes. All Tadashi knew was that Hiro was gone. Hiro was stuck in that dimension and he had been the one to let him go in it.

Hiro had died.

"This is all your fault!" Tadashi yelled, turning to Callahan. "You killed him! You killed Hiro!"

"Abigail…" Callaghan said, his eyes only on the pod. Tadashi stood, to give that guy a well-deserved punch to the face, but Wasabi and Gogo held him back.

"Tadashi!" Gogo said. "This won't change anything."

Tadashi stopped struggling against them, and fell to the ground. "He's gone…" He whispered heartbrokenly.

Tadashi looked at where the portal was, and thought that maybe he brother would come sailing through, having found a genius solution.

But, they all knew there was no way.

It would up being Fred who pulled him away when the cops showed up, and they watched as Abigail was revived and pronounced alright. Callaghan was taken into custody, and the city cheered for them in the next few days.

Tadashi didn't notice. Hardly any of them did. Aunt Cass had broken down upon the news, and Tadashi had with her. His friends kept reminding him that his brother was a hero, and that he had saved all of them.

That didn't make it hurt less.

At Hiro's funeral, Tadashi wondered what his little brother felt like, when he had been to his own funeral. Did he feel numb? Useless? Terrible? These were all things Tadashi felt.

Hiro had obviously had Baymax after Tadashi had died. Baymax had healed the boy, and Tadashi was so happy that he had invented Baymax. He had just wished that Baymax had been able to save him one last time.

"You know," Aunt Cass said, after Hiro's coffin had been laid to rest. "Hiro told me he was going to stop Callaghan."

"What?" Tadashi said, shocked. "I didn't know…"

"He said that someone had to help." Aunt Cass said. "He sounded just like you, Tadashi."

Tadashi didn't answer.

"He also told me that, in a different timeline, you had died." Aunt Cass said, sighing. "I wish I would have known he would take your place."

"I shouldn't have let him fight." Tadashi said.

Aunt Cass put a gentle hand on his shoulder. "That wouldn't have stopped him. It would have only made you two angry at each other before he died. That would have hurt worse."

Tadashi sighed, looking at his feet. "What do I do now, Aunt Cass? I feel like a failure. Like I messed everything up."

"You do what you can do." Aunt Cass. "You honor his memory."

She gave a small smile at him, before turning on the TV. New reports about Big Hero 6 were flashing across the screen. People were reporting how they had seen them, cops had drawn images of them. Despite his loss, Tadashi smiled.

And then it hit him.

This team was all Hiro wanted. He had wanted them to all band together to stop Callaghan. If he was here right, Tadashi bet Hiro would want them to better the world.

This was how he was going to honor his little brother.

A/N: Virtual tissues to you all! (If I managed to make you cry.) Good news, there is a another chapter! It's going to tie things up with Tadashi and the gang, and how the honor Hiro. It'll be good!