Su-Hyun, who was a cold-hearted and prickly girl, and Hyun-Su, who was a gentle and upright model student, coincidentally meet at their hometown station, Pohang 15 years later. They both feel a strange attraction to the matureness of each other. So the two stay up all night drinking and spending together watching the sunrise. Su-Hyun leaves the motel room while Hyun-su is sleeping. After a few weeks, the two meet again in Seoul as if by fate, and their relationship becomes deeper. Hyun-su finds out that Su-hyun had a husband. Tae-Jun. (A wealthy plastic surgeon but a violent husband who occasionally abuses her.) Feeling a deep betrayal of his love, Hyun-su ends his relationship with Su-hyun. Su-Hyun misses Hyun-su, who can only warm her cold-hearted life. Su-hyun commits an irreversible crime and calls Hyun-su. The two have lived very different lives; will the temperature of the two match?
| Actor | Role |
|---|---|
| HHye-Rim ChoiJi-Won | Ji-Won |
| KKyoung-Min ChoiSu-Hyun | Su-Hyun |
| HHae-Sung DoYoung Hyun-Su | Young Hyun-Su |
| Hyun-Su | |
| JJi-Won MoonYoung Su-Hyun | Young Su-Hyun |
| IIan OhTae-Joon | Tae-Joon |