Caterina finds out that her husband Peter Tzar of Russia, is plotting to kill her. She sets Count Orlov free from prison, Peter's sworn enemy, becomes empress of Russia and leads the Cossacks army against him.
Producer: Fortunato Misiano
Director: Umberto Lenzi
Screenplay: Umberto Lenzi, Guido Malatesta
Story: Umberto Lenzi, Guido Malatesta
Director of Photography: Augusto Tiezzi