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Danny O'Rourke (Kenneth Harlan) is the son of a cop who died in the line of duty. His sweetheart is Maggie Muldoon (Colleen Moore), whose father (Tom McGuire) is a police lieutenant. Danny is looking forward to joining the force, but to the disappointment of his mother (Myrtle Vane), he fails his examinations. Danny neglects his sweetheart in favor of society girl Miriam Welton (Ruth Clifford), who is doing settlement work. Danny's sister, Shannon (Priscilla Bonner), is arrested for shoplifting, and Danny takes up prize fighting to save her. He works his way up to the championship, but it turns out the fight is rigged. Although he announces this fact, the fight goes on and he is soundly licked. But all is not lost -- it turns out that a mistake was made with Danny's examination papers and he is able to join the police force after all. And Maggie is waiting faithfully for him.