A Polish counterintelligence officer infiltrates a spy network in Munich.

The film evokes a childhood in rural Lithuania between the wars. A country boy, Tomaszek, lives on a rich estate, situated on the Polish border. He realizes that the Issa Valley he lives in is to be torn apart by internal political conflicts and unrests among the mixed population of Poles, Lithuanians, Jews and Russians. He, however, is captivated by a paradise surrounding him, the forest, and his fantasies.

Two scientists are chosen as guinea pigs for a time experiment: they are placed in hibernation and should be brought back to life after three years. In the meantime, however, World War III breaks out and life has been wiped off the surface of Earth. When they wake up, it turns out that not only 50 years have passed but also that they are the only living specimens of the male sex in a new, underground society composed exclusively of women.