The film takes an unprecedented look at the National Hockey Leagues most feared enforcers and explores the career of Chris Knuckles Nilan. The role was simple: protect their teammates no matter the cost. For Chris this meant a shattered body, addiction to drugs, and harming the people closest to him. But in the process, he won the love of hockeys holy city, Montreal, and helped the team win the Stanley Cup. Through interviews with hockeys toughest guys, the film explores what it means to enforce the unspoken code of the NHL.