There's so many superhero movies coming out these days that it's refreshing to have one that's just about his man in his underpants.

Kevin Hart and Silicon Valley's Thomas Middleditch lend their voices as a pair of school children whose mischievous friendship has gotten on the wrong side of their principal (Ed Helms). 

A bizarre set of circumstances leads their principal to become hypnotised and leads him to believe that he is the titular hero from the comic book they created, Captain Underpants. 

Based on the series of children's books of the same name, Captain Underpants: The First Epic Movie will open in cinemas this summer.