Hunchbacked Japanese artist Marashida, marries Jewel, the daughter of Yasakuj. Their happy married life is destroyed when the daughter of an American missionary, Alice Carroway, known as Ali-San, persuades Marashida to pose for her sculpture of the deformed god Ni-O. While Marashida's character gradually deforms, Yasakuji recognizes in Ali-San the traits of the legendary Fox Woman, who because she had no soul of her own, stole those of others, sometimes turning warriors into crazy beasts. After Jewel, to please Marashida, indulges Ali-San's demand that she be her "playmate," she suffers further humiliation when Ali-San makes her the servant in her father's mission. Finally, Jewel discards the American clothes she is made to wear and, dressed in her wedding robes, goes to her ancestors' tomb to commit harakiri. When Yasakuji climbs up Ali-San's balcony, and she sees his face in her mirror, she accidentally falls off the balcony to her death. Released from Ali-San's spell, Marashida takes Jewel's dagger from her, and they live happily again.