The next morning was beautiful. The sun rose in spectacular shades of pink and orange that lit up the San Fransokyo bay like liquid fire before settling high in a clear blue sky. Birds chirped in the trees and it was even uncharacteristically warm for fall. It should have been a perfect day.

As it was, Hiro and the gang were crouched on a rooftop looking down at Alistair Krei giving a boring speech in front of his shiny new building. The man was gesturing with a glass of champagne, looking pleased as pie as he told reporters that they were going to do "amazing work" here. As long as restarting project Silent Sparrow wasn't on the list of amazing work Hiro really couldn't care less about what Krei was going to do in his fancy building.

For a while it looked like the bright day was mirroring their good fortune. Callaghan hadn't shown his face and Krei was nearly done his speech. But right as Hiro was starting to relax a shadow fell over Krei and the reporters. A soft whooshing sound filled the air as Hiro looked up to see microbots climbing over the roof and slotting into place overhead. Below, reporters screamed and fled the immediate area. Krei was right behind them until a stream of microbots stopped him in his tracks.

Beside Hiro, Honey Lemon gasped as Krei was lifted into the air, the microbots tightening and crumpling his blue suit and no doubt leaving bruises. Hiro motioned for the gang to stay put. Callaghan hadn't shown his face yet and Hiro wanted to have the advantage of surprise this time.

It didn't take long for Callaghan to come surfing up on his stolen microbots to threaten Krei face to face. He moved with more agility than Hiro thought someone of his age could have as he leapt about with the help of his microbots, though the coat probably added more than half of the dramatic effect. Hiro observed for a moment before noticing Callaghan pointing skyward. Looking up Hiro felt his stomach drop into his magnetic shoes –the undamaged portal from Silent Sparrow was being assembled over the new KreiTech building.

"Guys, I think we want to do this as fast as possible," said Hiro, bringing the rest of the team's attention to the portal.

"What! So that's what he was doing on the island," observed Wasabi.

"Let's go already!"

As one, they headed towards the madman and the microbots.

The only thing that could be said for their initial attack was that Krei got out of the way. Overhead the portal was whirring and sucking in stray microbots, while below the team was outmatched by the sheer number of microbots.

Hiro honestly didn't know what the rest of the team were up to while he and Baymax soared at Callaghan. He couldn't keep track of what was happening, not even with himself. As he approached Callaghan he found himself separating from Baymax and soaring through the air alone. Wasn't that just perfect. Hiro instinctively curled into a ball, and a half a second later crashed through a window of the KreiTech building. Hiro rolled on landing, glass crunching beneath his armour, though leaving thin cuts on his legs. Sitting up with a hiss of pain Hiro reached for the ribbons slashed into his calves. Above, the building gave an ominous crack followed by a groan. Looking up Hiro saw a deep crack run through the ceiling before the odd sensation of his stomach floating downwards hit him. Then all too quickly Hiro was zooming upwards and the ceiling was crumbling and floating up with him. Glass and concrete and office equipment flew up towards the portal's pull with Hiro.

Hiro's mind was running in overdrive, looking for anything that could stop his free fall –free flight?- into the portal. There! A loose wire was waving up at the portal, but still anchored to some part of the building. Hiro reached and just grasped it by the tip of his gloved fingers. There was a tight jerk in his shoulder but his grip held. From this vantage dangling under the portal Hiro could finally see what his friends were doing down there, and it wasn't exactly reassuring.

Honey Lemon had created some sort of orange dome to hide in, though it was being pierced by a stream of microbots. Wasabi was up on a roof, holding off two waves of microbots from squishing him flat. Fred was being pulled apart, and though he couldn't see GoGo, Hiro suspected she was trapped in the bubble of microbots to the right of Honey Lemon. Looking down on the scene from above Callaghan was simply observing all that was happening.

Hiro had to tell them to do something, they were all geniuses for God's sake, how could they not beat one guy using one of Hiro's inventions. Then a flutter of microbots flew by Hiro's helmet, one knocking against the side of it. Right, he had installed communication devices in the helmets.

"Guys! Use those big brains of yours and look for another angle!" Hiro yelled, hoping to spur them into action and get them moving. Below Hiro spotted Baymax maneuvering himself out of a pile of debris.

"If you aim for the microbots they'll fly straight into the portal," Hiro added as the Baymax began to fly up towards him.

As Hiro watched Baymax's ascent he took his eyes off the rising debris. One second after he focused on Baymax, one measly second, and a piece of the building flew up and hit his arm. The shock of it made Hiro release the cable, free falling once again towards the portal. His arm was on fire! Numb heat radiated out from the middle of his upper arm, spreading to his shoulder and elbow. Suddenly a weight slammed into Hiro's side. Thick armoured arms curled around him and Hiro looked up into Baymax's expressionless face.

"You appear to be injured. Shall I land in order to tend to your injuries?"

Pain shot through Hiro's arm. Yes he would like something to be done about that, but they still had a job to do. Callaghan wasn't going to stop destroying San Fransokyo just because a 14 year old was hurt. Especially a 14 year old that was trying to stop him.

"No, just let me get in place up there and let's go get him!"

Hiro scrambled up and over Baymax's shoulder, trying as hard as he could not to use his left arm. Once feet and hands were attached to their proper magnets Baymax rocketed off at Callaghan. They zipped and weaved, down below the rest of the team had done their job, the microbot streams becoming thinner every time. Finally they flew to a stop with Baymax's fist inches away from Callaghan's face.

And with one move from Baymax it was over. The mask crumbled easily between the armoured fingers and the pieces rained down with the microbots. Without their support, Callaghan began to fall as well.

Hiro let Baymax swoop down to catch him. After all, would Tadashi really want him to be a killer? No. But Tadashi also wouldn't have wanted him to take up vigilantism in his spare time either. Well, what Tadashi didn't know wouldn't hurt him. On the vigilante part anyway. Hiro didn't know if he had the stomach for killing anymore.

Baymax landed smoothly, depositing Callaghan roughly on the ground and allowing Hiro to crawl off without injuring himself further. Holding his arm close to his side Hiro looked around. GoGo and Honey had scratched the paint on their armour but were otherwise ok, Fred was rubbing at his arms, and Wasabi was covered in dust and rubble. It had been an interesting and tough fight for all of them, and Hiro felt his heart swell with gratitude that his friends were there with him. Wasabi grabbed ahold of Callaghan and Fred took up the other side to frog march him out of the rubble.

Behind them, the portal roared as it began to tear itself apart.

Hiro followed his friends, intent on getting away from the portal as soon as possible, but stopped when he could no longer feel the presence of his inflatable friend nearby. Hiro turned to see Baymax staring off at the portal.

"Baymax, buddy, we gotta get out of here," said Hiro, tugging on Baymax's arm.

"My scanners are detecting signs of life," replied the robot.

Hiro's heart beat double time. Someone could have been in the building and could have been buried in the rubble.

"They are coming from in there," continued Baymax, pointing at the portal.

Oh. That could only mean one thing.

"Alright buddy, let's go get her."

At that point the others had noticed that Hiro and Baymax were no longer with them and had turned to catch the last exchange.

"Hiro, no!"

"It's too dangerous."

Hiro now knew what Tadashi was feeling when he ran into the burning exhibition hall. The fear, the hope, the certainty that he had to do something.

"Someone has to help."

He carefully climbed back aboard Baymax, cautious of his throbbing arm, and together they flew a graceful loop before vanishing into the blue depths of the portal.