A doctor seeks revenge by kidnapping, torturing and killing the man who raped and murdered his young daughter.
5150 ELM'S WAY is located at the end of a quiet street in a small town. When Yannick fell off his bike, he knocked at the door of the Beaulieu residence so he could clean the blood off his hands. But Jack Beaulieu and his family had other plans for Ian. Beaulieu is a righteous psychopath and fanatic chess player who wants to rid the world of evil. And even though Ian has done nothing wrong, he is beaten, tortured and tormented before Beaulieu makes him an offer: win at chess and he is free to go. And so Ian is now a pawn in Beaulieu 's game. A game in which he will either lose his mind or his life.
One day, for no apparent reason, a cop kills 11 children. The same day, horror novelist Thomas Roy tries to commit suicide after cutting his fingers. At first glance, nothing seems to link the two events – until Dr. Paul Lacasse, a disillusioned psychiatrist, takes over the case. Prompted by his colleague Jeanne, a fan of Thomas Roy, Dr. Lacasse investigates the writer’s past. Hounded by a gossip columnist, Dr. Lacasse uncovers a series of troubling facts that bolster his convictions about the case. As he tries to reassemble the pieces of the puzzle in order to better treat the famous writer, Dr. Lacasse is dragged further and further into a series of events, with terrifying consequences.