Ra Seong-hyeon is dating Baek-se. Baek Se is perfect with his face, body, and even his blunt personality! However, he keeps avoiding the place when the atmosphere becomes strange. In the end, Seong-hyeon, who is sarcastic, wants to give up on the relationship, but at that moment, Baek-se wants to share the relationship with him. But, let's turn off the lights! As promised, Seonghyeon turns on a strange feeling while having a relationship with Baek Se in the dark...