after the events with liv amara hiro has a relatively normal life between being a college student and a superhero. But his life takes an unexpected turn when a new villain arrives in town. a villain from another reality the big hero 6 try to stop him However, they get trapped in the other reality gradually they realize the great difference between realities. And all this thanks to the presence and importance of a specific person. - Hiro........ is ?- - tadashi?-