Hiro thinks Baymax is lost forever, until he finds the chip that Tadashi designed to create Baymax. Hiro immediately gets to work rebuilding his friend.
As Hiro tries to find a way to connect to classmate Karmi, Go Go and Fred dive deep into comic book mythology to defeat High Voltage, a mother-daughter supervillain duo.
Go Go and Honey Lemon quickly clash when they become roommates. Meanwhile, when a thief steals Honey Lemon’s chem-lab purse, it accidentally turns him into a monster.
Hiro and the others plan the ultimate birthday surprise for Wasabi by recovering his car from the bottom of the bay, but Baron Von Steamer ruins the celebration.