Watch LookMovie. On the South Sea island of Somona, an American rough-and-ready hero, Sylvester Todd, punches a German prince for insulting Lady Diana Loring of England. Sylvester flees the island, and at the request of an English official, sails to another province to help quell a native uprising. The German foreman of an English platinum mine on the island plans to destroy it with the assistance of the natives.