The 17-year-old girl, Woodam, is overjoyed to have her own room for the first time. However, her older brother, Woojoo, brings home the pregnant Gyeongbin, who happens to be Woodam’s classmate. Faced with the threat of losing her room to Gyeongbin and her unborn baby, Woodam begins to devise a grand plan.

Kim Hwan-hee
as Woodam

Kim Li-ye
as Gyeongbin

Kim Min-kyu
as Woojoo

Bek Hyun-jin
as

Ahn Ji-hye
as

Im So-mi
as