Continuing directly from where the movie left off, this story follows the ongoing exploits and camaraderie of 14-year-old tech prodigy Hiro and his empathetic, state-of-the-art robot companion, Baymax. As the latest wunderkind at the San Fransokyo Institute of Technology, Hiro encounters formidable academic hurdles and the social pressures of being the youngest student. Beyond the campus, the high-tech heroes are tasked with defending their city against a variety of villains equipped with advanced scientific enhancements.