 "The World's Greatest Sinner" introduces a frustrated insurance salesman and his family, Clarence (Carey), his wife Edna (Rowland), his daughter Betty Hilliard (Griffin), and their son, as well as Clarence's friend, Alonzo (Barretto).Clarence Hilliard is dismissed by the manager in an insurance company due to Clarence's disregard for the 'scrape and screw' policy.Clarence confesses to Edna that he wants to become more than 'Clarence' and start a political career, but Edna falls asleep.