Dongchul, who is managing a small bar, is always enthusiastic about his school reunions. One day, Yujin, who has never showed up to a reunion, shows up at his bar. Her baby face and vitality make her unlike other married women and all the men fall for her, especially Dongchul. They start a relationship but it abruptly flames out due to the sudden arrival of Dongchul’s wife. As they get to know each other's secrets, will their love be allowed to grow?
Jo In-woo
as Dong-cheol (동철)
Kim Yoo-yeon
as Yoo-jin (유진)
Lee Hyeon-seong
as Sang-joon (상준)
Kim Neul-me
as Maeng-hoon (맹훈)
Yoo Seung-hyeon
as Yeong-mi (영미)
Choi Go-eun
as Mal-ja (말자)
Lee Hyeon-joo
as Soon-jeong (순정)
Kim Jang-dong
as Alumnus 1 (동창1)
Lee Chang-soo
as Alumnus 2 (동창2)
Seon Jeong-hwa
as Alumnus 3 (동창3)
Kim Si-jin
as Alumnus 4 (동창4)
Seo Na-hye
as BAR employee 1 (BAR직원1)
