Warsaw, 1985. In communist Poland, against the backdrop of the underhand ‘Operation Hyacinth’ run by the secret police, a young officer Robert investigates a murder case in the hermetic gay community. When he finds an informant, an unsuspecting, free-spirited student Arek, Robert ventures out on his own to discover the truth. In the process Robert must face his personal demons, his strict father, a secret police official, and, in the end, the communist authorities.