Jack Rubin is tough, fast with his fists, and totally amoral. He is also attractive to women. Jack was a copper, and a good one, even though he was known to cut corners and not always to follow rules. He made enemies in the top brass and among politicians. So, after five years of service, Rubin is set up, accused of receiving bribes, and dismissed. He opens a business as a private investigator, not always successfully. Most of the time, he chases unpaid debts, and spies on errant partners. Then he is asked by Ives, an Afro-Caribbean gangster and pimp, to carry a message to a London gangster. Rubin agrees, and gets a slashed hand for his trouble. On the way home, he picks up a young woman and they develop a relationship. A corrupt local politician, Harry Gledhill, engages Rubin to act as bodyguard for his young girl friend. It turns out that Gledhill is into weird sex, and makes Jack an offer, which Jack refuses. Finally, Ives asks Rubin to accompany him to London, where he intends to reach a settlement with his competitor. Jack finds himself in the middle of gang warfare, and he is forced to use his gun to fatal effect.