Hiro’s jealousy of Karmi’s internship at Sycorax leads him to intern at Kreitech. Meanwhile, the rest of Big Hero 6 tries to deal with old foes, Noodle Burger Boy and Trina.
Fred babysits Mochi in the SFIT labs, where Mochi unleashes adorable, destructive chaos.
Noodle Burger Boy jams out to a full length version of the Noodle Burger jingle while Big Hero 6 plays as his backup band.
Mochi gets stuck in a tree and Big Hero 6 attempts to get him down.
Go Go can't sleep because of Honey Lemon’s snoring and enlists the rest of the team to help her try and get Honey Lemon to stop.
Honey Lemon devises mini-chem balls which Go Go mistakes for a gumball with disastrous effects.
Hiro and Go Go accompany Krei to the woods to deal with Nedd Ludd, however they run into the monster of legend, the Hibagon, along the way
When mysterious but adorable creatures called Mayoi suddenly appear in San Fransokyo, Hiro is convinced that they’re part of some nefarious plot by Liv Amara.
A low-battery Baymax refuses to get into his charger.
Upon discovering Baymax’s inherent abilities to detect if a person is lying, Hiro attempts to use Baymax to uncover proof of Liv’s evil doing.
Wasabi needs a little extra cash and signs up to be a super driver, but his clientele all end up being some of San Fransokyo’s most wanted!
Aunt Cass is away at a café conference and leaves Hiro and his friends in charge of the Lucky Cat. They soon find themselves serving some familiar looking super villains.
Big Hero 6 must continue to fight off a city overrun with monsters as Liv's plot comes to its dramatic climax.
Fred runs into a string of bad luck that threatens his safety while Megan reveals to Hiro that she’s trying to uncover the true identities of Big Hero 6 for her school’s newspaper.
Professional mech-wrestler El Fuego is intent on becoming the toughest fighter in San Fransokyo; he decides he must beat the strongest challenger he can find, Baymax!
Nega-Globby begins to take control of Globby’s body in order to cause chaos around the city turning Globby from adored hero to a wanted criminal overnight!
Now fugitives, Big Hero 6 lay low as the SFPD searches for them. However, 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. But, after a mix-up with Fred, the present is lost.
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.
Circus acrobat and physicist Sirque steals a secret project from Krei and uses the technology to commit thefts all over the city.
Fred is caught and arrested by the police when his Fredmeleon suit’s invisibility function glitches during night patrol. The others have to break him out of the police transport.
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.
Supersonic Stu busts his grandmother, Supersonic Sue, out of prison. At school, Professor Granville asks Wasabi, who fears public speaking, to sub for an absent teaching assistant.
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.