As a result of an experiment with Totron, Siwiec, a journalist, is transferred in time. The editor meets himself at home, and Professor Kopot, who is responsible for the experiment, seems to be unaware of the whole event. But is he telling the truth? A very interesting approach to possible paradoxes of time travel. The film is spiced up by the supporting roles of Józef Nowak (this time not as As, although wearing a uniform) and Leon Niemczyk.