The former head of the Institute of Science - Professor Molnar, returns to the Institute to seek treatment for his heart condition. The new director of the Institute, and his former assistant, Dr. Egberg had a falling out with Molnar after the latter considered his research unethical. However, after waking up from surgery, Molnar makes a horrifying discovery; Egberg has swapped their brains!
Leszek Herdegen
Bogumił Antczak
Józef Duriasz
Czesław Jaroszyński
Jan Kasprzykowski
Jan Paweł Kruk
Janusz Kubicki
Michal Pietrzak
Remigiusz Rogacki
Tadeusz Sabara
Bohdan Sobiesiak
Piotr Stefaniak
Grażyna Marzec