Set in the fictional city of San Fransokyo, 14-year-old tech genius Hiro begins school as the new prodigy at San Fransokyo Institute of Technology and sets off to rebuild Baymax. However, his overconfidence and penchant for taking shortcuts leads him and the newly minted Big Hero 6 team – Wasabi, Honey Lemon, Go Go and Fred – into trouble.

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.

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

When supervillain Baron Von Steamer crashes Fred's Bro-Tillion, Big Hero 6 spring into action.

When Aunt Cass stumbles into an underground cooking competition, she thrives, and becomes addicted to the excitement.

Hiro, Fred, and Baymax follow GoGo into the mysterious Muirahara Woods where they get lost and everything electronic strangely fails including Baymax.

Hiro becomes demoralized when his latest school project fails spectacularly; the team must take on the incompetent villain, Globby.

After Aunt Cass nearly discovers Hiro's secret membership in the Big Hero 6, Hiro tries to set her up with someone to distract her.

Although he is obviously ill, Hiro refuses to listen to his team-mates and Baymax and only watch from afar as they fight the mercenary team Mad Jacks.

Crazy game show host Mr. Sparkles threatens to hurt Hiro's cat Mochi to force Go Go to join a game. But she is very afraid of public appearances.

Wasabi's need for order clashes with Hiro's chaotic work style when they collaborate on a school project.

Hiro becomes frustrated when he's deemed too young to attend a science workshop hosted by SFIT's most famous alumni, Dr. Trevor Trengrove.

Hiro decides to upgrade himself with super strength, but his new tech backfires and causes problems at home and at school.

Honey Lemon secretly takes art classes at SFIT's rival, SFAI, and soon finds herself caught in the middle of both schools' annual Rivalry Week tradition of pranking each other.

Karmi starts posting fan fiction about Big Hero 6, depicting Hiro as her boyfriend.

Hiro invents a tiny robot, Mini-Max, to supervise and be a sidekick to Fred while the rest of the team is in class.

Richardson Mole blackmails his way onto the team after Fred accidentally reveals their secret identities.

When a monster wreaks havoc in San Fransokyo, Big Hero 6 must go on a real-life monster hunt.

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.

Hiro is drawn back into the world of bot-fighting, where he meets Trina, a young bot-fighter.

After Big Hero 6 goes to a haunted house, Hiro keeps seeing his late brother, Tadashi, around the city.

Obake unleashes his plan on San Fransokyo. This is the teams biggest challenge to date.