A Chicago native John Griswall, gets murdered on the subway train going home from work for the weekend. He awakens to find himself in heaven. He meets Michael the Ark Angel of war and he offers him a job. Not just any job but a job of becoming a angel of death in his vast army of angels coming to earth and changing the rules and lives of all mortals on earth. Imagine there's no more armies, no more wars and the angels are forcing peace on earth? John goes back to Chicago and starts cleaning house in Chicago by killing bad guys around Chicago from petty thieves to murders to mob boss's to corrupt cops and politicians. A team of hard nosed veteran detectives try to find and stop this vigilante only to find out he is a real angel. What are you going to do"? You cain't kill him or imprison him. Chicago is forced to come to terms and cope with this new lawman or should I say "Law angel" in town and learns to live with him and a new Chicago because he's here to stay.