Trevor, Randy, Ben and Carl grew up together in the small town of Grimshaw as many boys do--playing hockey on the local team, the Guardians, and forging friendships that run deep. Twenty-four years later, Trevor, recently diagnosed with Parkinson's disease and faced with his own mortality, learns that his old friend Ben has committed suicide. He returns to Grimshaw to pay his respects and to reunite with Randy and Carl. But going home means going back to the memories of a sinister crime that occurred in the abandoned house at 321 Caledonia Street--a crime that claws its way into the present, leaving its indelible mark on everyone.