The film is based on real events and reveals the tragic episodes from the life of the Austrian biologist scientist-materialist Paul Kammerer (1880-1926), hunted by regressive scientists and Catholic reactionaries who committed suicide.
Key credits listed on this page include Mikhail Doller, Grigoriy Roshal, Georgiy Grebner, Anatoli Lunacharsky, Bernhard Goetzke, Natalya Rozenel, Elza Temary, and Nikolai Khmelyov.