A young man in his prime, Hae-Young is the only son of a rich family in the countryside. One day, his father suddenly brings back a young woman and asks him to call her “Little Mother”! The young woman not only charmed Witting to death, but also began to lead him to cross the…

For most people, family is important. For Seo Do-wook, it’s everything…especially when it comes to his stepsister, Han Gayoung. After Gayoung’s mother passed away when the two were young, Do-wook made a promise to do everything in his power to keep his noona safe. But when their father marries again to a wicked woman determined to make their lives a living hell, it proves harder than he thought. Attempting to escape, the two move out on their own only to be presented with a new problem. As their once familial love begins to turn into tangible desire, will the two step-siblings be able to resist temptation? Or will they give in to themselves and take their relationship one step too far…?

Unfortunately for Siyoung, the first woman he meets that suits his taste was his brother’s wife. His sister-in-law, who is increasingly frustrated with her marriage life, and Siyoung, who got attached to her. What kind of future awaits the three?

The woman who appeared in front of me who was seventeen full of enthusiasm, a glamorous expression with a dark gesture… You’re my father’s concubine!? It is not enough to secretly spy on the concubine who annoys his father every night and play with his hands. I want to make that woman my woman.