Choi Seung Hyo is the most noteworthy young architect in Korea, and he runs the architecture atelier "In." Not only is he nearly perfect as an architect, but he is also very attractive and has a great personality. Yet, Choi Seung Hyo has experienced moments that he wants to erase from his life. Those moments usually involve Bae Seok Ryu. When they were 4 years old, their moms became friends. Because of their moms, Choi Seung Hyo and Bae Seok Ryu spent a lot of time together, bathing together at a women's bathhouse. While growing up, Bae Seok Ryu's life was smooth sailing. During her school days, she never missed ranking first academically at her school. She was always passionate and energetic in the things she did. After graduating from university, she was hired by a large company. She worked hard as a project manager, but quit her job, retured home, and has been unemployed ever since. Now, Bae Seok Ryu reconnects with Choi Seung Hyo as an adult.
—Namuwiki