Using examples of sins as a template for a serial killing spree, a murderer sets his sights on a police detective and his partner. The killer has a twisted agenda involving choosing seven victims who represent examples of transgressions from each of the Seven Deadly Sins. He views himself as the sword of God, handing out horrific punishment to these sinners. Two cops, an experienced veteran of the streets who is about to retire and the ambitious young homicide detective hired to replace him, team up to capture the perpetrator of these gruesome killings.