After ten happy years of marriage, Ririko and her husband’s life takes a twisted turn. When university administrator Abe offers her assistant-professor husband a chance at promotion but demands something in return, the couple invite him home and treat him to Ririko’s cooking. Abe appears pleased, but he is secretly after Ririko and pressures the couple into visiting a porn theater with him. Unable to refuse without risking the promotion, they accompany him there, unaware of what he has planned for the faithful wife.