When they're around, the team watches a monitoring video and you will finds out one to former Krei is experimenting with teleportation tech. The exam ran completely wrong and you will awry whenever one of several websites turned unpredictable additionally the take to airplane pilot was destroyed. Because of this, it question when it is Krei this is the disguised guy. The latest disguised man all of a sudden re also-appears and you will starts to assault her or him. It you will need to get their mask, in which it deduce the brand new sender is based. Even with particular issues, Hiro succeeds from inside the slamming from the hide, assuming the guy really does, the guy is revealed to essentially be Professor Callaghan, just who explains he live the newest fire throughout the expo hall that with Hiro's microbots to guard themselves regarding the blaze. Hiro after that realizes that when Tadashi went on exhibition hall earlier to cut Callaghan, Callaghan in reality slain Tadashi inside flaming strengthening rush which had been Tadashi's real mistake. Upset one his sis passed away for the vain, he angrily removes Baymax's wellness chip, and requests him to help you kill/rating Callaghan getting payback. With just the battle processor chip leftover, Baymax will get a killing server and you may goes on a giant rampage during the attempt to destroy Callaghan, who is powerless without the microbots. Upset at four to possess preventing him away from exacting payback to your Callaghan, Hiro will leave which have Baymax. Baymax objects to this, and you will asks him if killing Callaghan makes Hiro have more confidence and asked if Tadashi will have wanted that it. To relax him, Baymax then suggests three clips tracks away from Tadashi throughout the Baymax's development in which he produces amends for the four when he started initially to forgive them.
Shortly after exploring much more video footage of teleporter take to, it realize that the exam pilot was actually Callaghan's child, Abigail, and you can realize 
Callaghan was seeking to revenge for the Krei, exactly who he blames for her noticeable demise. Utilizing the microbots, Callaghan grabs Krei and you will repairs the fresh new portal product as a result it will become unstable and you can destroy Krei Tech (Krei's fantasy building). The fresh heroes appear, and you can Hiro attempts to reason which have Callaghan. Callaghan briefly falters but in the course of time gets directly into his hatred and you may continues together with his bundle. The heroes race him and finally be able to neutralize the fresh microbots through getting her or him drawn with the site and take the new cover-up/transmitter from your. However, the fresh portal stays energetic which is getting increasingly erratic.
Since the folk prepares to leave, Baymax detects a woman lives setting inside webpage. Knowing that Abigail remains live and also in hyper-bed, Hiro and you will Baymax hurry into cut their. not, to their solution, Baymax's armor was harmed by a giant little bit of debris, and best possible way to store Hiro and you may Abigail is always to give up themselves. Hiro will not hop out Baymax at the rear of, but Baymax says to him it is the only alternative. Baymax requires Hiro in the event that they are happy with their care, to which Hiro unfortunately states "Yes," and you will Baymax deactivates. Hiro and you can Abigail make it straight back through the portal using Baymax's rocket fist. Callaghan is then arrested when you are Abigail are delivered to a medical facility.
Later on, once the Hiro settles towards Tadashi's dated lab, he finds out Baymax's medical care processor chip from inside the rocket hands. The guy effectively rebuilds Baymax, inserts the fresh new processor, and they happily get back. Brand new half dozen relatives following continue its heroic exploits through the city, helping those in you need.
