In their final film for Universal Pictures, Bud Abbott and Lou Costello get wrapped up in riotous comedy when they become stranded in Cairo, Egypt. There the bumbling buddies hire on as traveling companions to Dr. Zoomer (Kurt Katch), who knows of a secret medallion embossed with a hidden treasure map currently in the possession of Klaris (Eddie Parker), the living mummy. Richard Deacon co-stars as the evil cult leader Semu, who hatches a murderous plot to snag the medallion; with Marie Windsor, Michael Ansara co-star.