1979. Donald Lavoie is a fearsome hitman who works under the orders of Claude Dubois, head of the Montreal South-West mob. Donald is tasked to take under his wing new recruit Serge Rivard, a hotheaded small-time crook who soon compromises him in a botched double murder. Donald avoids justice thanks to the Dubois clan’s lawyers, but this is only a temporary setback for Detective Sergeant Roger Burns, who wants to convince Lavoie to become an informer.

Ex heroin junkie, Daniel Léger, gets involved in a drug deal with the wrong people for the wrong reasons. When the deal goes sour, Daniel gets thrown into a Thai prison and slapped with a 100-year sentence. While he tries to survive his Bangkok incarceration, the news of his conviction captures the attention of Globe and Mail journalist Victor Malarek, who decides to go after the shady undercover cops responsible for wrongly accusing Daniel.