Go Hyun Jung stars as Go Byung Hee, a 33-year old who writes most of the articles in a men's sex magazine. She's single and struggling to find a way out of her bland life. Chun Jung Myung plays Chul Soo, the 24-year old worldly mechanic who is also the younger brother of her best friend. The two of them grew up together and know everything about each other, but when they wake up in bed together, they realize they've truly crossed a line. Byung Hee wants to forget everything that happened, especially when a handsome doctor comes her way, but Chul Soo has other ideas. From the writer of My Lovely Sam Soon comes another drama that explores the relationships between an older woman and a younger man, and finding love in the most unlikely places.