Sequel to 'The Mummy's Tomb' (1942). Egyptian high priest Yousef (John Carradine) sets out for America to reclaim the bodies of both Princess Ananka and her guardian mummy, Kharis (Lon Chaney Jr). Once in the United States Yousef discovers that Ananka's spirit has been reincarnated in a beautiful young woman of Egyptian descent, whom he determines to kidnap and make his own. However, in so doing he risks the wrath of the vengeful mummy... Followed by 'The Mummy's Curse' (1944).