"Fist Bump is not in my fighting database."
Baymax is the big white healthcare companion robot and Hiro Hamada is the tech-loving boy he befriends. At this point you might be wondering how a small human child can be turned into a healthcare robot of rather generous proportions. Don't worry, the technology is available! There's also the opportunity to be Baymax in superhero form and add a functioning rocket fist.
If you haven't watched Big Hero 6 we highly recommend it (this article contains spoilers so watch it first.) It's one that the whole family will enjoy (warning: there are some very sad bits.)