Storyline: Li He had a sincere affection for his father and daughter since childhood, but since his father died and his mother remarried, it has changed. Every time she sees a middle-aged man, she misses her father. Yin Chengzai (Kyeong-yeong Lee) is the general manager of a company with a happy family and a successful career. He often feels that his youth has suddenly left him. By chance, Yin Chengzai met Li (Li Yaoyuan), a girl who is half his junior and works as a dance teacher in the gym. He experienced a real and intense love that he had never experienced before, hoping to try his thoughts, throbbing and previous feelings in love. Yin Chengzai found that he had found something missing in his life.