Watch Captain Underpants: The First Epic Movie (2017) full movie online.
Synopsis: George Beard and Harold Hutchins are two overly imaginative pranksters who spend hours in a treehouse creating comic books. When their mean principal threatens to separate them into different classes, the mischievous boys accidentally hypnotize him into thinking that he’s a ridiculously enthusiastic, incredibly dimwitted superhero named Captain Underpants.
Director: David Soren
Writers: Nicholas Stoller, Dav Pilkey
Stars: Kevin Hart, Thomas Middleditch, Ed Helms
More info: IMDB, Wikipedia