 When he is released, he again gets tricked, this time by a woman, into opening a safe, for which he receives a three-year jail sentence.On arrival in prison, he has a reputation as a master thief.Upon his release, he finds himself as a pawn being manipulated by two gangs into a safe-cracking scheme but, with the help of undercover police woman Muriel, he helps trap the crooks and clear his name.