František Koudelka, a kind-hearted country youth, goes to work in Prague. On the way, he buys a fitness chart, in which a computer calculates his successful days, or just bad days, or even crisis days, according to his date of birth. František starts working in a car repair shop. His energetic widowed aunt, with whom he also lives in a sublet, has found him a job as a mechanic. The mechanics at the garage receive large bribes from customers and it often happens that one of them goes mad from the influx of money. However, this does not threaten the shy František, because he follows his fitness program. It is also supposed to help him win the favour and eventually the love of Blanka, the shop assistant. But a competitor, the bartender Karel, stands in his way, and so František waits for his precisely calculated successful day.
The first film script by Zdeněk Svěrák and Ladislav Smoljak was directed by the king of Czech film parody, Oldřich Lipský. The story of a tractor driver who comes from the countryside to Prague is based on one of the passing hits of the normalisation era - the condiciogram. The filmmakers have succeeded in making an almost existential comedy about the fact that man can be the master of his own destiny. The indecisive František completely subordinates his life to a computer plan that defines his bad and good days for all his activities. While on the bad days the good-for-nothing naive man becomes a bitter victim of his usual incompetence and bad luck, on the good days he manages to dazzle Blanka the shop assistant, win a judo match and a car race, and finally defeat the pompous bartender. Packed with ideas, the film is rightly one of the Czech comedy gems, not only thanks to its many charming scenes and memorable dialogue, but also to its precise cast. The cast is dominated by the then twenty-nine-year-old Luděk Sobota in his first major film role.
