When Dave Lizewski – ordinary New York teenager and rabid comic-book geek dons a green-and-yellow internet-bought wetsuit to become the no-nonsense vigilante, Kick-Ass, he soon finds an answer to his own question: because it hurts. But, overcoming all the odds, the eager yet inexperienced Dave quickly becomes a phenomenon, capturing the imagination of the public. However, he's not the only superhero out there – the fearless and highly-trained father-daughter crime-fighting duo, Big Daddy and Hit Girl have been slowly but surely taking down the criminal empire of local Mafioso, Frank D'Amico. And, as Kick-Ass gets drawn into their no-holds-barred world of bullets and bloodletting with Frank's son, Chris, now reborn as Kick-Ass's arch-nemesis, Red Mist – the stage is set for a final showdown between the forces of good and evil – in which the DIY hero will have to live up to his name. Or die trying…
