Doug Glatt (Seann William Scott) is fed up and frustrated. In an effort to cheer him up, best pal Ryan (Jay Baruchel) takes him to a local minor league ice hockey match, but before long the feisty ex-bouncer has his knuckles planted squarely into the jaw of one unlucky player who reacted badly to the taunting crowd.
In an instant, Doug is a hero. He's quickly drafted into the hockey team as their 'Enforcer', a rough cut diamond who's ready to bruise up any brave opponents who cause trouble for his side. He's so good at it that he soon becomes noticed by coaches of larger, more successful teams. However, his biggest challenge lies ahead in legendary hockey enforcer Ross 'The Boss' Rhea (Liev Schreiber), and the cult hero doesn't take kindly to the new pretender to his crown.