Os amigos de Hiro chegam tarde para uma missão; Hiro e Big Hero 6 tentam impedir Noodle Burger Boy.

Richardson é nomeado prefeito por um dia; os cães de Granville desaparecem sob a vigilância de Hiro.

Hardlight estraga a sessão de autógrafos de Karmi; Trini ataca a cidade com veículos automatizados.

Fred é atacado por cobras mecânicas; Fred conhece a garota dos seus sonhos.

When Krei wants to sell the Mayor an automated fleet of shuttle vehicles, Honey Lemon suggests giving the shuttles a friendly face and an upbeat personality.

Hardlight crashes Karmi’s autograph session.

After Fred is attacked by mechanical cobras, he learns that they were actually sent after Heathcliff.

Fred meets the girl of his dreams, Olivia, only to be rejected by her for reasons he doesn’t understand.

4 2 Sing, a famous boy band, decides to be crime fighters and challenge Big Hero 6 to a superhero-off.

Go Go reluctantly goes undercover as the co-host of Wendy Wower's television show.

Globby and Honey Lemon feel guilty about trapping Nega-Globby in the Glop-Vac.

When Basemax opens a spam email, she gets infected with a virus.

In order to recruit child prodigy Rishi Patel, Professor Granville enlists Hiro to give him a tour of SFIT.

When Krei is lost in the old Sycorax building, the heroes must search the abandoned monster factory to find him.

When Big Hero 6 find Mr. Sparkles working at the Pizza Party-torium, he tells them he's decided to leave the world of crime behind.

Noodle Burger Boy and the mascots abduct Fred.

Krei invents a karaoke machine.

Hiro plans to defeat The Mascots once and for all.