Zatykač na královnu: Captain Záruba investigates after an anonymous tip flags the seemingly extravagant lifestyle of Chemotex technician Dagmar Králová. Summoned to discuss the matter, Králová’s quarrel with engineer Vaněček, who secretly runs a suburban bootleg alcohol factory, triggers panic among the illicit network led by hotelier Černý. When Králová is found dead near the site of a murdered hitchhiker, autopsy reveals a different killer, launching parallel murder investigations. Forensic teams uncover the clandestine distillery, and gradually piece together motives and perpetrators behind both deaths.