Hiro Hamada is a 13 year old boy living in San Fransokyo with his Aunt Cass and older brother, Tadashi.
Meeting the Mentor
Tadashi shows Hiro San Fransokyo Institute of Technology (SFIT) and Hiro meets Professor Callaghan and he tells Hiro that he can come to SFIT if he wants to.
Crossing the Threshold
There was a big fire at the convention where the competition for getting into SFIT was held at that caused Tadashi to die from trying to save Callaghan. Hiro's very sad and doesn't want to go to SFIT.
Tests, Allies and Enemies
The SFIT friends help Hiro when he is down and show him a new light. Baymax helps Hiro as his personal health care assistant.
Baymax finds out where the micro-bot Hiro had wanted to go and it lead to an old warehouse. They find a man in a Kabuki mask with thousands of micro-bots and want to find out more.
Tests: Hiro finds a video about how Krei sent Callaghan's daughter, Abagail, into a teleportation portal and how she never came out. Allies: The SFIT friends and Baymax are all allies because they help Hiro out. Enemies: Callaghan and possibly Krei.