San Fransokyo is currently under attack by a villain from underground. The said villain had already destroyed much of the city's properties and will not stop unless someone brave enough is going to face him, one on one.

Hiro, being a part of the Big Hero 6, wants to stop this once and for all. The damage done was already too much and unbearable to see; wrecked roads, demolished buildings and houses, destroyed plants. This isn't the first time Fransokyo was invaded by some crazy lunatic, so Hiro is quite accustomed with the trouble and isn't a rookie when it comes to fighting and coming up with strategies. On the second day of the terrorizing, Hiro tracked the underground villain and found where his hideout is. He decided to take Baymax with him, and only Baymax! Honey Lemon, Fred, Wasabi nor Gogo will come with him. The reason being is because Baymax is the only one who is capable of fighting off ground so if the others came along, they will surely get hit and endanger their lives and the last thing Hiro wants is another funeral to go to and a death of a friend.

When the sun had set, he and his friends gathered down at his 'work area'; all of them were already suited and ready for combat. It was last minute when Hiro told them that he and Baymax are going alone. He explained to them why, his friends listened to him intently. When he finished, it took a minute for his friends to decide. Thankfully though, his friends understood him...well, almost everyone.

"Hiro, no!" Gogo exclaimed, her eyebrows furrowing.

Hiro sighed, "Gogo, please..." he pleaded. "It's for the good of the city, and yours too!"

"You and Baymax are good, but I don't think the two of you will be enough to handle that guy!"

"Gogo, Baymax can fly. We'll be safe as long as we're up. You, on the other hand, can't travel off the land and I can't risk your safe-

"Shut it, Hiro! I'm coming with you!"

"No! I don't wanna see you get hurt, Gogo!"

Gogo blushed slightly but immediately shook it off, "It's either that or you're not going at all"

Hiro sighed exasperatedly, "Gogo, someone has to help..."

Gogo's eyes widened in sudden realization. She remembered how Hiro told them when Tadashi died; those were his last words. She remembered when Hiro told them that before he went in the portal with Baymax. She remembered how he always says that every time trouble arises.

"Listen, everything's going to be okay, alright? Don't worry, if the worst comes, we'll send word out to you guys" he assured her, looking deep into her brown eyes.

And that's all it took to calm her nerves down. She stared at him for a few more moments before an understanding smile formed on her lips, which Hiro returned.

Gogo placed both her hands on his shoulders, "Hiro, I care for you and the last thing I wanna do is let you go. But I don't want to be selfish" she sighed and looked down momentarily, finding courage to say the next words out loud. "So please be safe and promise me you'll come back to me" she looked at him, deep into his eyes, letting him feel how sincere she is with what she just said.

Hiro smiled up at her, "I promise"