Ji-hae and Soo-kyoung are friends attending the same university and both have a crush on Sang-min who is in their drama club. The more clamorous and outgoing of the two, Soo-kyoung, asks Ji-hae to do her a favor - write a love letter to Sang-min. Ji-hae pours out her own feelings for him on paper, but sadly in her friend's name. Touched by the letter, Sang-min is attracted to Soo-kyoung, and Ji-hae, feeling uncomfortable and even guilty, tries to avoid him. And yet by coincidence or by fate she keeps running into him.

Han Ji-Won, a private banker who is as proficient at her job as she is at seducing men. When she meets up with Min-Joon, she sees a prime opportunity to add yet another name to her long list of conquests, but considering the man's own talents in the area of romance, it seems that things aren't going to be quite as easy as Ji-Won expects! Who will come out on top in this hilarious battle of the sexes?

Accident

On live concert hall, lighting director, In-su (BAE Yong-joon) leaves the hall in a hurry putting the concert in charge of his junior worker. Then in a hallway at a hospital operation room in Samcheok, Kangwon-do, he meets Seo-young (SON Ye-jin). The reason he went there is a car accident of his wife, Su-jin (LIM Sang-hyo). Also, Seo-young's husband, Kyung-ho (RYU Seung-su), was in the car with her.

Betrayal