Kim Min Jun, feeling stuck in his 9-to-5 job, is shocked when his ex, Jin Hwan, returns as a new colleague. As Min Jun struggles with his past, Jin Hwan has other ideas.

잘 모르는 자를 집에 들여 낭패를 본 적은 없는가
낯선 자를 함부로 집에 들이는 선의를 베풀지 마라
창수는 필름사진 동호회 활동하면서 알게 된 낯선 사내를 집에 끌어들이게 되고 둘이 술을 마시다 취해 잠든다. 잠에서 깬 창수는 포박돼있고 아내는 겁에 질려있다. 창수를 묶어 높은 사내는 시니컬한 표정으로 이 광경을 바라만 본다. 아내를 지켜야겠다는 생각에 창수는 탈출을 시도한다. 그런데 어쩐지 아내와 그 사내의 분위기가 수상하다.

Her irresistible fatal love, his love is stuck in the trap.
Ah-yeon looks sensual in those short tennis outfits she always wears. When Min-seok, a successful prosecutor encounters Ah-yeon in a parking lot of a tennis court, he happens to provide her with help unexpectedly. He later gets contacted by Ah-yeon frequently. Although Min-seok, the married man tries to refuse her excessive hospitality towards him, it’s not easy to refuse those. One day, Min-seok receives a correspondence saying he is accused of bribery and then he realizes he might lose his position as a prosecutor. While his relationship with his wife has become unstable as well, he cannot stop thinking about Ah-yeon. He after all begins the relationship with Ah-yeon he should not have started.