Doctor James Leland is a successful doctor engaged to nurse Marion Nord. Working late one night he discovers his assistant stealing the supply of cocaine. The doctor is knocked unconscious and his body is dump assuming, incorrectly, that the good doctor is dead.

A young man is sent by his father to Mexico to investigate his mine. On the way he meets a girl, whose life he has already once saved, who is traveling to the same place. He is kidnapped by some men who are misdirecting the mine shipments, and escapes in time to save the girl from death

Los Angeles cop goes undercover to catch a gang of murderous thieves.