Gat Brady (John Litel) is a wealthy gangster, though he's never killed anyone, an he is devoted to his teenaged daughter Annabel (Mary Maguire). When he's arrested for tax evasion on the eve of a European trip, he has Annabel's governess Flo Allen (Ann Sheridan) continue on the trip with the girl anyway. Red Carroll (Ben Welden), who hates Gat, kidnaps Annabel, but is caught and sent to the same prison as Gat. A fight with Red results in Gat being sent to the maximum-security prison on Alcatraz Island but, still bent on revenge, Red later arranges to have himself sent there, too. ~ Bill Warren, Rovi