An American drifter stranded in the South Seas struggles with poverty and social scorn before encountering a wary woman and noticing a dangerous local figure; drawn into a local plot, he becomes involved in a high-stakes chase to a remote island, negotiating jungle trails and the threat of an ancient idol. The narrative combines maritime and island settings, episodic action, and elements of suspense and betrayal, exploring themes of desperation, shifting loyalties, and the rough morality of frontier colonial life.