Kay Hoog, the sportsman, receives a message in a bottle from a Harvard professor that leads him to believe he has discovered a hidden map of an Inca lost civilization. He decides to travel to Peru to seek out this treasure. However, during his journey, members of a secret criminal organization led by Lio Sha break into his mansion and steal the map.
Kay Hoog continues on his journey to Peru, where he retrieves his map and a document about the Diamond Ship from The Spiders. Later, he saves the Priestess of the Sun Naela and brings her back to San Francisco. However, The Spiders kill Naela and Kay Hoog vows revenge for the death of his love.
