A chronicle of the life of a middle-class French girl's sexual adventures, her then fall into prostitution, and her ultimate redemption.

The plot follows the story of twin brothers, one is a coldhearted violent police officer, the other is a helpless romantic with a mental disability. The two brothers are tragically involved with a prostitute who works in the bordello that gives the film its title. The film was adapted from an eponymous novel written by Juan Marsé.