A criminal story set in the 1980s. Robert, a young policeman "out of principle", finds a serial gay killer. In the course of the investigation, he meets Arek. She decides to use him as an informant, not realizing how much this relationship will affect not only his work, but also his personal life.
Poland, 1985: Not satisfied with the result of a murder investigation, a young officer in communist Warsaw sets out on his own to discover the truth.