Kazmierz Dziewanowicz's hobby is very strange. He collects people who were born on the 29th of February. One day he sees that in his collection there are two men with the same name, the same birth place, the same date of birth and the same parents. In the middle of the night somebody kills him. The Intelligence Agency begins investigation.
Nikodem Dyzma is a poor dancer who comes to Warsaw to find a job. The problem is that nobody wants to hire him. One day he finds an invitation to the party with very important people and decides to attend. A small accident at the party makes him the hero of the night and becomes the beginning of his career.
A young poet is hired to boost the morale of water pump workers.
