Twenty-eight-year-olds Seon Tae-hyung and Woo Hyun-jin find their lives upended when they are forced to raise their infant nephew, Woo-ju, following the sudden death of the child's parents. Despite being in-laws with no prior close relationship, the two begin living together to care for the baby. As the inexperienced pair navigates the challenges of parenthood, they grow closer and begin to develop romantic feelings for one another.
Bae In-hyuk
Roh Jeong-eui
Park Seo-ham
Park Yoo-ho
Oh Hyun-joong
Oh Se-eun
Kang Ae-shim
Kim In-kwon
Han Ji-hyo
Lim Sung Jun
Jin Seo-yeon
Ku Sung-hwan
Yoon Woo
Choi Gyu-ri
Kim Seong-jeong
Chun Yi-seul