A sincere provincial young man, Frantisek Koudelka leaves to work in Prague. For the trip he buys a computer made horoscope with biorhythms charts, marked according to his date of birth, there are trappy, precarious, unsuccessful and even critical days and few successful days. The clumsy luckless person Frantisek has finally a guidance for his life.

Luděk Sobotaas automechanik František Koudelka
Marta Vančurováas prodavačka Blanka
Věra Ferbasováas tetička Marie Sýkorová
Josef Dvořákas automechanik Béda Hudeček
Ladislav Smoljakas vedoucí servisu Karfík
Zdeněk Svěrákas podnikový psycholog Klásek
Václav Lohniskýas psychiatr docent Chocholoušek
František Husákas zřízenec na psychiatrii Arnošt Holna