Soo-kyung works as a reporter. She has an older brother, Sung-ho, and younger sister, Joo-mi. She thinks of her two siblings as burdens. One day, Nak appears in front of them. He is their youngest sibling.

Lee Yo-won
as Soo-kyeong

Jeong Man-sik
as Seong-ho

Esom
as Joo-mi

Jeong Joon-won
as Oh-nak

Kim Hye-eun
as Soon-im

Jeong Ae-hwa
as Neighbor

Yoon Kyung-ho
as Dal-ju

Lee Do-gyeong
as Maeng-dal

Park Yong-su
as Jong-do

Jung Hyung-suk
as Yong-cheol