Jiro, a younger brother who lives with his brother and his wife. My brother-in-law, Mami, used to be Jiro's tutor, and since then Jiro has been in favor of Mami. One day, Jiro, who had been taught to study by Mami, sees it. Where my brother and Mami are having sex ... Then they got married. Jiro, who cannot accept that the woman he liked married his brother, pushes Mami down to make it his own. However, Jiro started shooting Mami who resisted with a video camera ...