When researching the complete town, Baymax locates the latest masked son on an isle (off-shore) from the city, titled Akuma Isle

Shortly after the guy returns domestic, Hiro tries to beat Baymax's healthcare processor again

If they are truth be told there, the group observe a security video clips and you will learns you to definitely former Krei was experimenting with teleportation tech. The exam ran completely wrong and you can incorrect whenever among the many sites turned into volatile as well as the shot airplane pilot is actually lost. Because of this, they ponder when it is Krei this is the masked man. The latest masked child unexpectedly re also-appears and you will starts to attack him or her. It you will need to get their cover up, where it consider this new transmitter can be found. Even after specific problems, Hiro functions in the knocking off the hide, and in case he really does, the man try revealed to truly end up being Teacher Callaghan, just who teaches you that he endured this new flames in the exhibition hall that with Hiro's microbots to protect themselves regarding the blaze. Hiro after that understands that when Tadashi went towards expo hall earlier so you can save Callaghan, Callaghan in fact murdered Tadashi in flaming strengthening explosion that was Tadashi's real error. Crazy that his sis died for the vain, he angrily removes Baymax's fitness processor, and you will instructions him so you're able to eliminate/rating Callaghan to possess revenge.