Directed by Matthew Vaughn, Kick-Ass is a comic book action film starring Aaron Taylor-Johnson as an ordinary teenager who attempts to become a real-life superhero despite having no powers or combat training. Chloë Grace Moretz and Nicolas Cage co-star as the violent vigilante duo Hit-Girl and Big Daddy in a story blending superhero action, dark humor and stylized comic-book violence. Based on the comic series by Mark Millar and John Romita Jr., the film became known for its grounded approach to superhero fantasy and graphic action tone.

Från IMDB:
Dave Lizewski is an unnoticed high school student and comic book fan who one day decides to become a superhero, even though he has no powers, training or meaningful reason to do so.