The special bond that develops between plus-sized inflatable robot Baymax, and prodigy Hiro Hamada, who team up with a group of friends to form a band of high-tech heroes. When a devastating event befalls the city of San Fransokyo and catapults Hiro into the midst of danger, he turns to Baymax and his close friends adrenaline junkie Go Go Tomago, neatnik Wasabi, chemistry whiz Honey Lemon and fanboy Fred. Determined to uncover the mystery, Hiro transforms his friends into a band of high-tech heroes called "Big Hero 6."