Sunghoon is an office employee who lives a disciplined life and is full of rules. He had lived alone for a long time and was too busy working to have time for a romantic relationship. One day Sunghoon decided to change his life a little by moving into a luxurious house on the beach that he bought himself with the money he earned from work. Sunghoon just wanted to change the atmosphere but it turned out that his life also changed after moved into new house.

"What are you doing in my house?"