Shortly after the defeat of Callaghan and Hiro's first day at San Fransokyo Institute of Technology, Hiro finds Baymax's personality chip and proceeds to re-create his companion.

Go Go and Fred search through comic book mythology to try and discover a way to defeat High Voltage, a mother-daughter duo who utilise electricity and dance to accomplish their crimes.

A purse thief gets more than he planned on when he steals Honey Lemon's chem-lab purse and it turns him into a monster.

Big Hero 6 is called to action, when Fred's Bro- Tillion is ruined by the arrival of super villain Baron Von Steamer. As Big Hero 6 tries to fight him off, Fred decides to confront the intruder.

Aunt Cass stumbles into an underground cooking competition, where she thrives and develops an addiction to the thrill of it.

Hiro, Fred and Baymax enter the Muirahara Woods looking for the Go Go, but their electronics soon fail and they become lost.