Song Ju and Jeong Seo who have lost a father and a mother respectively spend their childhood together like real siblings. Song Ju is there for Jeong Seo whenever she feels lonely and has a hard time, and Jeong Seo also relies a lot on Song Ju. However, after Jeong Seo's father gets married to Tae Mi Ra, Mi Ra and her daughter Yu Ri keep harassing Jeong Seo out of jealousy. Tae Hwa, Yu Ri's rough and wild older brother, has a crush on Jeong Seo who is pure and kind unlike him.
권상우
as Cha Song Ju
최지우
as Han Jeong Seo / Kim Ji Su
신현준
as Han Tae Hwa / Han Cheol Su
김태희
as Han Yu Ri
이휘향
as Tae Mi Ra
박신혜
as Han Jeong Seo (Young)
백성현
as Cha Song Ju (Young)
하재영
as Professor Han Su Ha
Kim Ji-sook
as Chairperson Min Seo Hyeon
정한용
as Han Pil Su
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
Episode 13
Episode 14
Episode 15
Episode 16
Episode 17
Episode 18
Episode 19
Episode 20
Episode 21
Episode 22
Episode 23
Episode 24
Episode 25
Episode 26
Episode 27
Episode 28
