Entering her third year of marriage, Saki suffers from a sexless relationship with her husband. Unable to suppress the swirling desires within her, she becomes deeply affected after accidentally witnessing her nephew's strong morning erection. Overcome by lust, she crosses the line in that very moment. Seeing his wife immersed in pleasure, the husband feels an abnormal excitement. He devises a plan to have his colleague steal Saki away, then moves forward to carry it out. As he watches Saki frantically fucking another man right before his eyes, he unleashes his twisted love.