A military contractor hired to seize a weapon that turns people into savage killers seeks revenge when his brother falls victim to the device.

Despite the anti-Semitic campaign launched by the Polish People's Government in the late 1960s, director Jerzy Hoffman finishes working on the film Pan Wołodyjowski. It becomes the ticket to the production of Potop, the most expensive film in the history of Polish cinematography. During his work, the director not only has to deal with mounting production problems, the distrust of the People's Government, but also with the expectations of millions of Poles.