Takeo, an old prophet, explained a legend to the people of his village in Japan that the first male descendant of the samurai lord Yamaki's family was cursed by God. Therefore, if Yamaki's daughter Toya San gets married, a volcano near their village that has been inactive for a long time will erupt. When an American ship encountered a shipwreck near a village, sailor Tom Wilson was rescued by the mountain. Tom fell in love with Toya San. He told people about this new god, who was stronger than Buddha, and convinced her to marry him. Wu Fu arrived at the American mission too late to prevent the marriage, and a volcano erupted. Yamaki and many others were killed, but Tom and Toya San fled to an American ship anchored in the port.