In Earth's future, a global crop blight and second Dust Bowl are slowly rendering the planet uninhabitable. Professor Brand, a brilliant NASA physicist, is working on plans to save mankind by transporting Earth's population to a new home via a wormhole. But first, Brand must send former NASA pilot Cooper and a team of researchers through the wormhole and across the galaxy to find out which of three planets could be mankind's new home.
Robotics prodigy Hiro lives in the city of San Fransokyo. Besides his older brother Tadashi, Hiro's closest companion is Baymax, a robot whose sole purpose is to take care of people. When a devastating turn of events throws Hiro in the middle of a dangerous plot, he transforms Baymax and his other friends Go Go Tamago, Wasabi, Honey Lemon and Fred into a band of high-tech heroes.