Mike Hammer (Ralph Meeker) is driving down the freeway, minding his own business, when he almost hits a woman. Mike is a private investigator, and he knows trouble when he sees it, but he can’t just leave her in the road. His decision to stop and help triggers a confrontation with a group of thugs. When he comes around, the lady is dead – and Mike wants to know what the hell just happened.
With the help of his assistant and lover, Velda (Maxine Cooper), Mike takes a deep dive into the L.A. underworld. Scouring the backstreets, bars and boxing clubs, he uncovers a web of intrigue and violence, involving all the usual men of power, i.e. gangsters and cops. Countless bodies are left in the wake of his