Woo-Jin is married to Samuel. They've been married for 5 years and do not have a child. Woo-Jin is goal-oriented and aggressive when it comes to achieving her goal. She is also tenderhearted at other times. She works as a receptionist at a 3 star hotel that pays a modest wage. One day, Woo-Jin happens to learn a secret about a couple who she is friends with. Meanwhile, Samuel has a mild mannered appearance, but he has rage burning deep in his mind. He graduated from a prestigious university and worked for a big company. He suffered mentally working there and quit his job. He now works as a taxi driver. Samuel teams up with Woo-Jin and they secretly follow a couple involved in an affair. They then blackmail them to make money. Doing that, Woo-Jin and Samuel face their own relationship as a couple.
