Heal the romance between a man and a woman, where the former's life feels exhausted because his words are meaningless, while the latter fears life due to inner closure. Dong soo's tic command made him swear unknowingly that he would go to Ye ri's rooftop house twice a week to deliver daily necessities, which was his job. After Ye Ri's younger brother passed away, she was always locked in her room. Although she can only communicate with the world through publishing online novels, Dongxiu comforts her. twice a week. Dongxiu and Ye Ri began to talk about things they had never told anyone before. She talked about her younger brother, and she wanted to see an ocean without water. Dongxiu decided to let her realize this wish... Can they succeed?