A woman is waiting in a motel for her boyfriend, when an old flame turns up and tries to take her back to the life she is trying to leave behind.
Three detectives in the corrupt and brutal L.A. police force of the 1950s use differing methods to uncover a conspiracy behind the shotgun slayings of the patrons at an all-night diner.
Doc McCoy is put in prison because his partners chickened out and flew off without him after exchanging a prisoner with a lot of money. Doc knows Jack Benyon, a rich "business"-man, is up to something big, so he tells his wife (Carol McCoy) to tell him that he's for sale if Benyon can get him out of prison. Benyon pulls some strings and Doc McCoy is released again. Unfortunately he has to cooperate with the same person that got him to prison.
Karen McCoy is released from prison with nothing but the clothes on her back. Before being incarcerated Karen was the bank robber of her time, but now she wishes for nothing more than to settle down and start a new life. Unfortunately between a dirty parole officer, old business partners, and an idiot ex-husband she will have to do the unthinkable in order to save her son.