Trying to get justice for her wronged mother, Tracy Whitney is instead framed by a gangster and sent to prison for 15 years. At first a victim, Tracy makes alliances and plots her escape. She abandons her plan in order to save the warden's young daughter from drowning, earning herself a pardon. Tracy avenges herself and her mother, and is soon recruited by the mysterious Gunther Hartog to be a master thief.