Vojtěch Bohdanovský (Jiří Havelka) and Soňa Kostková (Petra Hřebíčková) are siblings. Both teach at the Palacký University in Olomouc, both are experiencing a crisis in their marriage: Vojta and his five-year-old son are left by his wife, Soňa, attached to two children, faces her husband's infidelity and eternal neglect. Vojta writes detective stories in his spare time. Soňa is inspired by him and publishes a very successful erotic novel Background of Events under a pseudonym. The ambitious Alice Klusová (Jitka Čvančarová) is elected to the position of dean of the Faculty of Philosophy. In an effort to eradicate all manifestations of surviving sexist stereotypes at the school, educators and students who cross the imaginary ethical border come into its crosshairs. The situation at the university escalates when a sexually motivated murder of a female student occurs. Thirty-five-year-old criminologist Lída Stehlíková (Martha Issová), who lives in a partnership with a woman with whom she is expecting a family, is tasked with investigating the case