Plot:"Kick-Ass" tells the story of average teenager Dave Lizewski (Johnson), a comic-book fanboy who decides to take his obsession as inspiration to become a real-life superhero. As any good superhero would, he chooses a new name -- Kick-Ass -- assembles a suit and mask to wear, and gets to work fighting crime. There's only one problem standing in his way: Kick-Ass has absolutely no superpowers whatsoever.

His life is forever changed as he inspires a subculture of copy cats, meets up with a pair of crazed vigilantes -- including an 11-year-old sword-wielding dynamo, Hit Girl (Moretz) and her father, Big Daddy (Cage) -- and forges a friendship with another fledgling crimefighter, Red Mist (Christopher Mintz-Plasse). But thanks to the scheming of a local mob boss Frank D'Amico (Mark Strong), that new alliance will be put to the test.

Source#1: Watch Kick-Ass (2010) Online-full