Joon Hyeok is an unpopular musician whose life has hit rock bottom. He had already broken off his relationship with his older sister, Joon Hee, when her son appeared before him. His nephew developed Obsessive–compulsive disorder after his mother divorced his stepfather. Joon Hyeok takes his nephew in and looks after him. Joon Hee divorced her physically abusive husband after 12 years of marriage. She moved into an inexpensive apartment and now faces losing custody of her son to her ex-husband and his mother.

Oh Jung-se
Wang Joon-hyeok

Lee Kyung-hoon
Min Ji-hoo

Jeon Hye-jin
Wang Joon-hee

Choi Seung-yoon
Son Joo-No

Park Sun-young
Park Hye-ryeong

Kim Min-chul
Jang Do-Kyung

Lee Sang-woo
Joo Kyeong-il

Lee Si-won
Song Hwa-eum

Hwang Woo-seul-hye
Kim Yoo-ra
It tells the story of an uncle who takes care of his nephew, an elementary school student who has anxiety disorder and obsessive–compulsive disorder, due to his sister's divorce.
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