The theatre company managed by Marco is passing through a crisis; the big networks invaded the market with their poor products and they lay down the law. Marco finds an important subject to work on: homosexuality; but it is hard to ask Federica, who is a writer and director, to work on it. That subject is a thorn in her side, as it was the cause of her marriage break up. Federica angerly refuses Marco's proposal, but after one night of searching, spent on Internet, she brings to light an aspect of the homosexuality, which doesn't want to give up, now: "The Pink Triangle" that means homosexuality as a martyrdom, the tribute of blood that homosexual people shed during the nazi period. Federica explains Marco and other actors of the company the new project, by telling the historical documentation. Each of them imagines his own character in dark colour performances, often brutal, following the line of blood that history has drawn.

1920: Madame Blanche discovers, reading the newspaper, that one of her tenants has been arrested. The woman, with the maid Tedla, goes to the police station to try and get her money. The inquiry starts from here: Monsieur is accused of homicide. The police will find ten paintings portraying ten women: the maid begin to tell the story of those ten women that she knew. But, one by one disappeared. A sequence of women stories. Along series of homicides. And just one killer.