David (Jiří Macháček) has one task: to investigate paranormal cases. But he doesn't feel like it. It's the 1980s, and there are a lot of annoying people who call each other "comrade." He doesn't believe in anything paranormal anyway. He prefers to sit in his office, pretending to work on research into satanic references in Western music, and enjoys listening to LPs that no one else in the country has. The world would be beautiful, but his superior assigns him a new colleague, Vojta (Jan Cina). This overzealous newcomer talks about pushing the boundaries of human knowledge and how science doesn't have answers to all the mysteries of the world yet. This mismatched duo has no choice but to cooperate in investigating bizarre cases that all other security forces in the state can't handle. To make it harder, they are constantly monitored by a pair of StB agents – the tough agent Snížková (Anna Fialová) and the sweetheart Hora (Leoš Noha).