A giant crocodile is killing and frightening people living nearby rivers. Two men, whose wives and daughter have been killed by the crocodile, decide to chase and eliminate it.

Seo Mun-kyung, a merchant in ancient China where polygamy is legal, monopolizes the salt sales business. The magistrate of the province collapse families of Hwa Ja-heo and Hwang Mu-dae through Mun-kyung. When Ja-heo's wife Byung-ah fakes her death and disappears with Ja-heo, Seo is angered. But when he sees Mu-dae's wife Ban Geum-ryun, he is satisfied and this causes Mu-dae to end his own life. Geum-ryun makes Seo's concubines Chun-ae and Kyo-ah lose their sight and she takes Byung-ah to Seo. When Byung-ah has Seo's baby, antagonism and jealousy grows between the two women. Geum-ryun's jealousy kills Byung-ah's whole family and also kills Seo. Geum-ryun chooses to join her husband in death.