TV series version of Super Marines Season 3

In the super city of San Fransokyo in the future world, Hiro, a genius boy who loves inventions and creations, was encouraged by his brother Teddy to participate in the entrance contest of the Institute of Technology's robotics major hosted by Professor Robert Callahan. He won unanimous praise from the audience, contestants and examiners with his magical miniature magnetic robot, but a sudden disaster destroyed Xiao Hong's dream and life. The fire destroyed the exhibition venue, and his brother died in the fire trying to rescue the trapped Professor Callahan. Hiro is physically and mentally traumatized, and Baymax, the treatment robot left behind by his older brother, becomes his only comfort partner. They originally thought that the micro-robots were also destroyed in the fire, but Hiro and Baymax accidentally discovered that someone was mass-producing his invention in an abandoned factory.