Doris Standish's father insists upon her marriage to aging millionaire Cyrus W. Hopkins, but just before the wedding, the young woman runs from the house and leaps into a parked car, ordering the chauffeur to drive her quickly away. The driver is Jimmy Nevin, who, because Hopkins financially ruined his father, has agreed to help a gang of crooks in their plot to steal the bride's jewels and wedding presents. Realizing that Doris is not Mary Butler, his accomplice, Jimmy offers to accompany her home, but when she refuses to return, he takes her to the thieves' hideout.