In San Francisco, the sportsman Kay Hoog tells to the members of a club that he has found a message in a bottle with a map from a Harvard's missing professor telling about a treasure of an Inca lost civilization still alive. He decides to go to Peru to seek the gold. However, members of the secret criminal organization…

In San Francisco, the sportsman Kay Hoog follows Lio Sha in a subterranean Chinatown and discloses that her organization is seeking a Buddha-head diamond that will release Asia from tyranny. He is captured, but he escapes and chases The Spiders, embarking as a stowaway in the Storm Bird. The ship heads to London, with …