A year after defeating Obake, Hiro and his friends have grown close but one day a new student arrives and begens create a rift between hiro and his friends framing him for doing things he did not do, after gogo and his friends hurt him, a heartbroken hiro abandons big hero 6 and his friends and along with aunt cass and baymax they move away from San fransokyo to new York City, years later when visting new York, gogo and the others run into hiro and he is not happy to see them, can gogo and the others fix there broken friendship?