They are all people living in the darkness. One is a frightening perverted murderer, and the other is an obsessed criminal psychology doctor. When they first met, it was a close game. When they met again, he leaned against her ear and whispered, "Play a game, do you dare?" After ten years of gaming, from From a model husband to the best neighbor, from a perverted murderer to a daughter slave, he can switch freely. Even when he exercises his rights as a husband, he seems to be able to see love in those cold eyes. The dark night releases all oppression, and the only remaining moonlight is no longer salvation. Between the intertwined bodies on the bed, who loses and who wins?