A special bond develops between plus-sized inflatable robot Baymax, and prodigy Hiro Hamada, who team up with a group of friends to form a band of high-tech heroes.
Rodney Copperbottom is a young robot inventor who dreams of making the world a better place, until the evil Ratchet takes over Bigweld Industries. Now, Rodney's dreams – and those of his friends – are in danger of becoming obsolete.
Lewis, a brilliant young inventor, is keen on creating a time machine to find his mother, who abandoned him in an orphanage. Things take a turn when he meets Wilbur Robinson and his family.