Professor Granville becomes increasingly pushy with her suggestions for Big Hero 6 as she helps them try to figure out a mysterious series of food-related burglaries.
Aunt Cass sets Hiro up on a date and afterwards, Hiro wonders if he is missing out on being a "normal" kid. Fred has a new suit. The team must deal with an upgraded High Voltage.
When Honey Lemon finds out she can return to her dorm, Go Go realizes she doesn't want Honey Lemon to move out. Big Hero 6 look to stop a secret underground racing league.
Hiro is forced to write a story for his class and decides to write a Big Hero 6 story. Meanwhile, strange versions of Noodle Burger Boy attack the team.
Fred runs into a string of bad luck that threatens his safety; Megan reveals to Hiro that she's trying to uncover the true identities of Big Hero 6 for her school's newspaper.
Intent on becoming the toughest fighter in San Fransokyo, professional mech-wrestler El Fuego decides he must beat the strongest challenger he can find: Baymax.
Now fugitives, Big Hero 6 lays low as the SFPD searches for them; new villain Hardlight shows up hoping to challenge Big Hero 6 to a real-life video game duel.
When Hiro finds a wrapped present in the closet, he assumes it's from Aunt Cass and takes it in order to figure out what it is. However, after a mix-up, the present becomes lost and Hiro enlists the Big Hero 6 team to track it down.
Momakase blackmails Hiro into helping her steal a mysterious item from Yama's safe, threatening to tell Chief Cruz Big Hero 6's secret identities if he doesn't help her.
A new villain calling himself Major Blast appears in the city, and is targeting Fred! The other members of Big Hero 6 try to figure out who is behind the Major Blast mask.
Chief Cruz and the police get the upper hand in their battle with both villains and Big Hero 6 when they begin using Buddy Guardians, powerful new robots produced by Krei Tech.
