Soo-jeong is from an ordinary family and moved to Seoul in her mid 20s to start working. She balanced office work and instructing yoga, and 3 years ago she married her husband, whom a student introduced her to. However, her husband starts verbally abusing her, and her cheerful personality hits rock bottom. After witnessing her husband's affair, she asks for divorce and she has to watch him be with someone else every night. She feels like killing herself every day. Then she meets Joo-hyeong, the man who lives upstairs...

Ji-yeong is a good looking, slim and big-breasted insurance planner who is really bad at her job. Dae-cheol, her school friend, suggests she sells some insurance at the friends' reunion where alot of wealthy friends will show up. Ji-yeong doesn't really feel like it but she dresses up sexily and goes to the reunion. For some reason, her results at work are getting better and better every time she goes to the reunion...