Forgotten Commandments is a well-meaning but clumsy attempt to explore the consequences of communism. The story takes place at a Russian university where religious discussion is forbidden. A priest risks his life to espouse the Ten Commandments, but he is killed by a hedonistic scientist (Irving Pichel) who writes up his own set of "pagan" commandments--which leads to an overall loosening of morals at the university. The scientist comes to grief when his own mistress (Sari Maritza) takes the "new" commandments to heart and begins an affair with a married man (Gene Raymond). The highlight of Forgotten Commandments is a "flashback" sequences to Moses' flight from Egypt, lifted bodily from the Cecil B. DeMille silent epic The Ten Commandments.