Jirka Horáček, a teenager living with his father on a Pilsen housing estate, spends his free time at discos with friends. One night he meets the confident blonde Eva, who is already involved with an older suitor, Cáfa, and also encounters the kind Jitka. Despite Jitka’s interest, Jirka becomes infatuated with Eva and tries to win her favor, all while his reckless pursuits strain his relationship with his impatient father.
The fate of father and son Horáček, but this time they switched roles. Jirka has married, settled down and grown up, while his father is in trouble because he has "second lymphoma" and, feeling that he is missing the last train, he starts a relationship with a stripper, Ala, dyes his hair, but mostly he likes a pretty and kind nurse, Lucie. Although he behaves in such a way that it seems to others as if he has lost his mind, everything turns out well, of course.
Major Maisner, head of Interpol for Central Europe and neighboring Asian countries, is fulfilling his mission in Bangkok, Thailand. When he returns from his mission, he has no idea that his doppelganger, sent here by the Thai mafia, is acting on his behalf in the Czech Republic.
