When the owner and operator of a luxurious island invites a collection of guests to live out their most elaborate fantasies in relative seclusion, chaos quickly descends.

Following Kick-Ass’ heroics, other citizens are inspired to become masked crusaders. But Red Mist leads his own group of evil supervillains to get revenge, kill Kick-Ass and destroy everything he stands for.

A frustrated and conflicted teenager arrives at a new high school to discover an underground fight club, and meets a classmate who begins to coerce him into fighting.