Inspired by the Marvel comics of the same name created by Man of Action, the franchise tells the adventures of 14-year-old tech genius Hiro Hamada and the compassionate, cutting-edge robot Baymax created by his late brother Tadashi. Along with his friends Wasabi, Honey Lemon, Go Go and Fred, they form the superhero team Big Hero 6 and embark on high-tech adventures as they protect their city from an array of scientifically enhanced villains.
Hiro Hamada is a 14-year-old high school graduate and robotics genius living in the futuristic city of San Fransokyo who spends much of his free time participating in illegal Robot combat. To redirect Hiro, his older brother Tadashi takes him to the research lab at the San Fransokyo Institute of Technology, where Hiro meets Tadashi's friends, Go Go, Wasabi, Honey Lemon, and Fred. Hiro also meets Professor Robert Callaghan, the head of the university's robotics program. Amazed, Hiro decides to apply to the university.
As the new prodigy at San Fransokyo Institute of Technology, Hiro now faces daunting academic challenges and the social trials of being the little man on campus. Off campus, the stakes are raised for the high-tech heroes as they must protect their city from an array of scientifically enhanced villains.
The all-new series of healthcare capers returns to the fantastical city of San Fransokyo where the affable, inflatable, inimitable healthcare companion robot, Baymax, sets out to do what he was programmed to do: help others.