Joining efforts to hunt down a serial killer who is lost in his own beliefs that his acts are a sign of absolution, two powerful detectives must explore the darkest part of this unknown killer to find many reasons. Detective Somerset (Morgan Freeman) and Mills (Brad Pitt) are the greatest detectives who manage to discover part of the serial killer’s technique after the evidence they collect at a previous scene. The serial killer uses the seven deadly sins to punish those he wishes.
The two detectives investigate a couple of murders that include an obese man who is believed to have been forced to eat until his stomach burst, a defense attorney, who died due to severe bloodletting and the removal of some flesh.
John Doe goes to graphically illustrate the killer’s intentions with the sins. Detective Somerset goes ahead to learn more about the seven deadly sins while detective Mills strive hard to enter into the killer’s mind. To look back, detective Somerset describes the obese man’s death as gluttony and the rich defense attorney as greed.