Young-sil and Insik become lovers eight hours after meeting. Insik is certain that Young-sil is a free spirit. Anxious Insik makes Young-sil promise that their love will be forever, whatever happens. Young-sil tries to keep the promise, even after their breakup. 8 years later, Young-sil likes Woodo, but is unable to do anything.
| Actor | Role |
|---|---|
 Ok Ja-yeonYoung-sil | Young-sil |
 GiyoonInseek | Inseek |
| LLee Hye-jeongSu-yeon | Su-yeon |
 Kim Joong-kiProfessor | Professor |
 Kang Tae-youngUdo | Udo |
 Choi Hee-jinHee-won | Hee-won |
 Choi Jeong-inHyoun | Hyoun |
| KKim Yong-samHwan-min | Hwan-min |
| HHan Mi-jaYoung-sil's Mother | Young-sil's Mother |
 Lee Dong-chanYoung-sil's Father | Young-sil's Father |
| LLee Hyun-seoAh-young | Ah-young |
| WWon Hyang-raSinger | Singer |