Silk, a former safecracker who`s gone straight, is framed by Moose McKay, a wealthy society man who is actually the head of a criminal gang, and sent to jail. While there he meets and falls for Alma, a society girl who is also being pursued by McKay. When Silk gets out of jail he attempts to prove his innocence but McKay continually blocks his efforts. Eventually he is forced to join McKay`s gang in order to make a living. Complications ensue.