On Christmas night, four estranged friends reunite for a game of poker to rip off a rich businessman—but old grudges get in the way.
A middle-aged woman, traumatized from the death of her adulterous lover, moves into a room at a New Orleans boarding house where the blind landlord becomes suspicious to her activities of continuing her affair with her dead lover.
Police detective Paolo Germi and the mysterious Marisa meet each other at a dance hall. Germi is unsuspecting of the secret Marisa is carrying with her: adverse conditions forced her into prostitution. As Germi finds the young girl brutally murdered, he decides to go after her killers. During his investigation, he enters a world of intrigue and obfuscation that leave an endless trail of blood.
