After more than ten years together, Seojin’s boyfriend walks out without warning, only to announce he’s engaged to her boss’s daughter. When her life feels completely dried out, a man appears and pulls her into a one-week summer romance she assumes will fade like a dream. But the real shock comes later: that same man is introduced as a CEO at her new job. A thrilling adult office romance between guarded secretary Hyeon Seojin and her bold, relentlessly straightforward new boss, Chae Juwan.

In his hurried transfer to a rural school, Hyoun meets Seonhong, a bright and cheerful classmate who is everything he is not. As often happens with first love, the two quickly become each other’s whole world. But one day, Seonhong vanishes like smoke, leaving behind nothing but memories of a brilliant love at eighteen. Ten years later, they cross paths again by chance at a blind date arranged for Seonhong. Overwhelmed by the pain of being abandoned, Hyoun greets her not with joy, but with betrayal and vengeance. “Have you thought about it? Ten million won for one night.” Their love is now tangled with resentment and regret. Can something so broken ever be mended into love again?