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.
Oyuncular
권상우
Cha Song Ju
최지우
Han Jeong Seo / Kim Ji Su
신현준
Han Tae Hwa / Han Cheol Su
김태희
Han Yu Ri
이휘향
Tae Mi Ra
박신혜
Han Jeong Seo (Young)
백성현
Cha Song Ju (Young)
하재영
Professor Han Su Ha
김지숙
Chairperson Min Seo Hyeon
정한용
Han Pil Su
