(At Neo Beacon Academy, Ozpina sees something which draws her attention. Future Black Adam is seen overwhelming Gogo Tomago, Honey Lemon, Wasabi and Fred.)

Ozpina: Damn it. (communicates with Hiro) Hiro! Can you hear me?

Hiro: Roger!

Ozpina: It looks like your friends have been taken away.

Hiro:

Ozpin: I'll be sending Team CFVY, Yatsura and Vixen to help you!

Hiro: Sorry, Ozpina. I can't allow my friends to die just like Tadashi did!

(Then Hiro turns off his communicator)

Ozpina: Hiro. Wait.

Weiss: That dunce is getting in trouble again?

Ozpina: Yes… he went after Black Adam and he may get himself killed!

Weiss: Drat!

Yatsuhashi: It looks like the Big Hero 6 are in danger.

Coco: Come on, team! We got a job!

(Then Team CFVY, Yatsura and Vixen go to help Hiro)

(Meanwhile at the rebuilt Regime Base, Gogo Tomago, Honey Lemon, Fred and Wasabi are seen tied up. As they wake up, a screen appears, showing Brainiac Superman)

Brainiac Superman: I'll make this brief. You will soon join those I killed. While you die slowly, you will be replaced by your clones, and they will destroy your precious friend Hiro Hamada.

Fred: Why you…

Brainiac Superman: This is what you get for standing in my way. Enjoy your last miserable breaths!

(Message ends)

Future Black Adam: You heard the man! Prepare to die!

(Hiro is seen riding Baymax)

Hiro: Okay, Baymax. We're almost there!

Baymax: Hiro. Do I need to remind you that we're entering enemy territory?

Hiro: I don't care. I have to rescue my friends!

(Then Hiro is seen approaching the enemy base, then the brainwashed Green Lantern comes in)

Hiro: Hal Jordan! You're not supposed to wear this ring!

(Green Lantern attacks Hiro, who easily evades)

Hiro: I could be a better Green Lantern than you, Hal Jordan! Time to prove it!

(They fight. Due to the brainwashing, Green Lantern's willpower is not as strong as Hiro's own willpower. And this is more than enough for the leader of the Big Hero Six to defeat him)

Hiro: Like I said, I can be a better Green Lantern than you.

(Hiro then prepares to enter in the base, but some lightnings are about to hit him, but then Baymax defends him)

Hiro: Black Adam, huh?

(Then Future Black Adam comes in)

Future Black Adam: Your friends will be joining your brother very soon. Then so will you!

(Hiro gets enraged and attacks Black Adam with all rage.)

Future Black Adam: (enraged) It looks like I'll have to seal your fate myself. DIE!!

(They fight. Black Adam is harder to deal with compared to Green Lantern. But Hiro refuses to give up and then goes all out against the king of Khandaq, defeating him)

Hiro: This is for mentioning my brother!

(The brainwashed Green Lantern tries to get up, but a green hand construct punches him in the head, knocking him out. Then Team CFVY, Vixen and Yatsura come in)

Hiro: What are you doing here?

Coco: We came to help you!

Hiro: I don't need your help!

Coco: Yes, you do!

Hiro: No, I don't!

Coco: Yes, you do!

Hiro: NO, I DON'T!!!

(Hiro tries to punch Coco, but Velvet uses the Green Lantern Ring she copied from Hal Jordan, and creates another hand which blocks, Hiro's punch, surprising him)

Velvet: Yes, you do!

Hiro: (sighs in defeat) Let's get going!

(Then they enter in the Regime Base and see Yokai in front of the four heroes)

Yokai: Right on time, Hiro Hamada!

Hiro: (angry) Callaghan…

Yokai: Your choice, Hiro! Who will die first? Gogo Tomago? Fred? Honey Lemon? Or Wasabi?

Wasabi: No. I don't wanna die!

Gogo Tomago: Calm down! It will be alright! Hiro and his allies will save us!

Yokai: No, they won't…

(Then Hiro enjoys the opportunity and tackles Yokai)

Hiro: Free them! Now!

(Coco and her team do so. Then Hiro starts punching him, almost breaking his mask. Then Yokai shoves him off.)

Yokai: Maybe I was sentimental before, Hiro Hamada! I'll be fine without you!

(They fight. The battle is as intense as their last fight. But Hiro learned about all of Yokai's tricks. Then he manages to defeat Callaghan. After beating Yokai, he approaches him)

Hiro: I'll take this!

(Hiro takes Yokai's mask, causing the microbots to fall. Then he starts feeling headaches)

Hiro: Argh… my head…

Gogo Tomago: Hiro? What's going on?

Fred: I guess somebody is trying to get on his head.

Velvet: But who?

(Then Atrocitus comes in)

Atrocitus: Years pass by, and you didn't let go of your anger, Hiro Hamada…

Wasabi: Ugly guy!

Atrocitus: (still talking with Hiro) Time to unleash your anger!

(As the Red Lantern Ring approaches Hiro. But then Future Star Sapphire and Future Green Lantern, who is now free from the brainwashing, come in and try to talk to Hiro)

Future Star Sapphire: Hiro! Listen! Remember what Tadashi said! Remember, Hiro!

(Then Hiro starts having visions about his brother)

Tadashi: You will help many people. Oh, many. Thank you. I feel much better.

(Then Hiro manages to control his anger and attacks Atrocitus instead)

Hiro: I will not allow my anger to get the best of me! Not anymore!

(They fight. Hiro realizes where anger could have taken him, and fights to the end against Atrocitus and defeats him)

Hiro: It looks like I managed to control my own anger after all…

(Then the heroes see Future Green Lantern and try to attack him, but Future Star Sapphire stops them)

Future Star Sapphire: Look. Hal is not under Superman's control any longer.

Gogo Tomago: You may be right.

(Then the heroes gather)

Gogo Tomago: We'll get Superman. But now, the right way.

(Meanwhile at the Fortress of Solitude, Brainiac Superman is seen completely angered)

Brainiac Superman: Another traitor… it looks like I'll have to flush these scums out as fast as I can!

(Back to the Neo Beacon Academy)

Glynda: Steven Universe and Zero! I need you to gather some pieces for the weapon which can destroy the Brainiac's enhancements.

Steven: Got it!

Zero: On our way!

(The final stand against Brainiac Superman is about to begin.)