Agent Artemus Gordon and the curator of the San Francisco Museum are set upon in the Egyptian exhibit by three men wearing gas masks. When agents West and Mr. Heisel, the Egyptian government's representative, enter the room, they are also attacked. After regaining consciousness, the men discover that a priceless ruby has been stolen from the eye of the statue of Sun God, Ra. Commissioned by Miasmin, an Egyptian Princess, to recover the gem, West and Gordon trace a ransom note to a waterfront bar where Gordon poses as a sea captain. At the bar, West recognizes one of his assailants at the museum. The man identifies himself as Jason and indicates that Rosie, a beaufiful young dancer at the bar, is wearing the ruby on her toe. Unfortunately, Rosie vanishes before West can make a move.