A/N: I'm really trying to get all the writing I can in before I have to go to work tonight, which is good for you guys because it means more story! Enjoy!

"Okay, Baymax." Hiro said, sneaking into the warehouse. "Let's see if he's here."

Hiro used a small laser to cut through the locks to the warehouse. It had only been a few days, and Hiro was sure that he and Baymax could stop Callaghan before he mass produced Hiro's micro bots.

Baymax's armor was as good as it was going to get for a few days' worth of work. His suit was not fully operational yet, but time was of the essence, and this was the only time Hiro and Baymax could make a move without Tadashi breathing down his neck.

Hiro gently opened the door, walking in. Baymax followed him slowly.

"Okay." Hiro whispered, "If we can find the lab and destroy it, then that should set Callaghan back."

Hiro turned to continue searching.

"Hiro!" Baymax said, urgently. Suddenly, the boy was hurtled out of the way as micro bots flew past where they had been standing.

"What!" Hiro said. "I thought the old ones had been destroyed!"

"Nonsense." Callaghan said from behind them, wearing the dark jacket that he had donned as the masked man. "Do you really think I would let these things perish? No. As for you, Hiro. How did you find my lab?"

"Intuition?" Hiro said, laughing nervously. "Look, I can help your daughter-"

"Do not mention her name!" Callaghan yelled. Hiro tried to say she was alive, but he and Baymax was pushed violently against the wall by the micro bots. "It looks like I am going to have to set up shop elsewhere."

Callaghan poured a liquid on the floor, letting both Baymax and Hiro go as he did so. There was a lot of it, and it reach Hiro's feet.

"Wh-what are you doing?" Hiro asked nervously.

"Since you didn't die in the fire I set last time, I thought it would only be fair to try again. This time you will perish."

Callaghan lit a match, and dropped it into the liquid. It quickly began to expand to Hiro, and Callaghan laughed as he and the micro bots left the warehouse.

Baymax pulled the boy out of the way, placing him on his back. "Baymax! I don't have your flight on here yet! We can fly out!"

Hiro began to cough as flames rose up everywhere. He couldn't breathe in here.

Baymax then was running, and Hiro was glad that he had upgraded the robot to make him faster, and he broke through the wall of the warehouse, just as it exploded. They both landed roughly on the pavement, and Baymax moved to protect Hiro from the fire.

"Are you okay?" The robot asked, after the flames died down a bit.

"Yeah." Hiro said, "But we both better get out of here before the cops get here."

Baymax nodded, or well tried to. He could never get that move down.

He and Hiro over the last year had learned that cops generally did not know what to do when situations were above their heads. They would only ask questions towards Hiro and the robot, and not get anything done.

Hiro and Baymax got back to the garage, covered in soot and ash. Sighing, Hiro began the work of taking of Baymax's armor, though he was way too tired to do so.

"You know, I'm thinking about maybe making your armor into a backpack or something that you can carry." Hiro said, yawning. "This is too tiring."

"Portable armor could have a positive effect on saving people." Baymax said.

"Yeah, I'll add it to my pile of things to do." Hiro said, taking the headpiece off.

"Hiro?" A male voice said, and both the boy, and the robot turned to see Tadashi standing at the door of the garage. "Hiro! What happened?"

"Oh, hey Tadashi." Hiro said, resuming his work. "We were just out and about. Tried to catch Callaghan and he tried to set us on fire. What is it with that guy and fires anyway?"

"You tried to catch Callaghan?" Tadashi said. "Hiro, that's dangerous! And why is Baymax wearing carbon fiber armor?"

"My huggable design is not appropriate when trying to apprehend bad guys." Baymax said, his finger raised in the air as it always was when he stated a fact.

"Couldn't have said it better myself, buddy." Hiro said, groaning as he took the stomach plate off.

"Apprehending bad guys?" Tadashi said. "What does that mean?"

"It means we went after Callaghan. I remembered where his lab was last time and tried to stop him before he could mass produce my micro bots. Unfortunately that didn't exactly go to plan. Baymax, did you scan him like you did last time?"

"Yes." Baymax said.

"Good. I'll make a super sensor for you after we get the team together." Hiro said, noticing that all of Baymax's armor was off. He nodded approvingly, before walking over to the computer. He had made it halfway there before Tadashi grabbed the hood of his sweatshirt.

"What do you mean you went after Callaghan?" Tadashi said, his eyes narrowed.

"Oh, come on." Hiro said. "You know the police can't handle it!"

"Okay, maybe the police can't handle a guy with a flame fetish who is mass-producing micro bots, but what makes you so sure you can?"

"We did it last year!" Hiro said. "Me, Baymax and the team!"

"The team?" Tadashi said.

"Yeah, Gogo, Wasabi, Fred, and Honey." Hiro said, rubbing his neck. "We all formed a team to stop bad guys together. We call ourselves Big Hero 6!"

"Okay…" Tadashi said, chuckling. "I can believe the time travel and the whole I died thing, but my friends? A superhero team? They're nerds, Hiro."

"So?" Hiro said. "I'm a nerd too, remember?"

"Look, Hiro." Tadashi said, grabbing his brother's shoulders. "I know you want to stop this guy, and I do too. But making my friends a super hero team? Making Baymax a fighting robot? That's a little too much."

Hiro pulled away from his brother. "Well, we did it last time, and we're doing it again." He walked over to the computer and pulled up the designs for his friends costumes. "See? I have all of the designs made. Now, we just have to get them on board."

"Hiro…"

"What, Tadashi?" Hiro said, getting irritated.

Tadashi looked at him, before sighing. "I guess I can't stop you, can I?"

"Nope." Hiro said.

"Then, what can I do to help?"

"They stole your micro bots?" Honey Lemon said.

Baymax had called them all to the garage so that Tadashi and Hiro could talk to them. Hiro had waited until the micro bot that he had stolen from Callahan was active, so that way he would be able to track him. Callahan was ahead of schedule this time. It only took a few days.

Hiro had immediately gone into explaining that while they were in there, they saw someone steal his micro bots. Just like last time, Hiro knew that they would only respond to physical evidence. They were going to have to see the masked man.

"Yeah!" Hiro said.

"Why would some random guy steal your micro bots?" Gogo asked, blowing a bubble with her gum.

"I … I don't know!" Hiro said. "But he's the one who set the fire that nearly killed us."

"Hiro," Honey said. "Are you sure?"

"Yeah," Tadashi said, finally coming into the conversation. "I saw it too."

"Did you report it to the police?" Wasabi said. "I'm sure they can handle it."

"I tried, but they didn't believe the story!" Hiro said. "I think we're going to have to go after him."

"Wait!" Fred said. "Are you actually telling me to be a … a superhero?"

"Yeah, buddy." Hiro said, smiling. "We all have to be superheroes."

"Yes! How wicked is this guys? What do we do!?" Fred said, excitedly.

"Well, I had a run in with the guy earlier, and I happened to find this." Hiro said, holding out a micro bot. "It's been trying to follow the neurotransmitter for a while now, which means the guy is active. I figure we can follow it…"

"Hiro, are you sure?" Honey said. "I mean, we're just … us. What are we going to when we find this guy?"

A slow smile spread on Hiro's face. "I have a plan for that." He walked over to Baymax and pulled out a piece of his armor. "I made Baymax carbon fiber underpants!"

"Okay, buddy." Hiro whispers, perched on Baymax's shoulder. "Just like last time."

Baymax did not respond, because he knew the plan. Hiro had to make this battle go the same as the last. As long as his team saw the supervillain side of Callahan, he could do the rest of the convincing.

Tadashi, however, was not as confidant as his little brother.

"Yo bro," Wasabi whispered, all of them walking a good deal behind Hiro and Baymax. "When did Hiro steal your robot?"

Tadashi shrugged. "I don't know. They seem to get along though."

"His programming is off, isn't it?" Gogo said. "Normally he deactivates, and I never thought he would be so … heroic."

"I know." Tadashi said. "I let him play with Baymax for a while, and this happens. I think I've let him go too far with the whole stolen micro bots thing."

"Yeah." Honey said. "I mean, they were all destroyed in the fire, right?"

Tadashi shrugged. He didn't want his friends in the middle of this. He still believed that there was a better alternative to stop Callahan rather than his brother and his friends risking their lives to do so.

But he also knew Hiro was not going to be deterred, so he thought he would let his friends do the talking when they saw how crazy this all was.

"It's trying to go over the water." Hiro said. "He must be at that island!"

"The guy who stole your micro bots?" Honey asked.

"Yeah!" Hiro said, turning to them. "He's probably there making some right now."

"Uh oh." Baymax suddenly said, and Hiro turned back around. A man in a mask was floating on seemingly floating on the water. Tadashi was trying to get a better look when Hiro and Baymax dragged them all away.

"What is that?" Fred said. "Is that our super villain?"

"Yeah." Hiro said. "He's using my micro bots. He stole them!"

"Okay." Gogo said. "But how do you know he's using them to be a bad guy?"

Hiro sighed, and turned back to see what Callaghan was doing, but was shocked to find him gone. He turned back around to his friends, and brother, only to see them looking up.

"Hiro!" Wasabi yelled, just as the young boy saw Callaghan use the micro bots to pick up a metal trailer, and hurl it towards them.

"Baymax!" Hiro yelled, just as Tadashi pulled him out of the way.

Hiro and Baymax looked at each other. The battle had begun.