When Sung-hoon's father brought home a much younger woman and introduced her as his new stepmother, it was quite normal to refuse. As well as feeling hate for this new woman invading his family. That's exactly what Sung-hoon plans to do when he meets Yeoni, his father's girlfriend. However, he didn't take into account how hot she was or how determined she was to be friends with him.
In this situation, Sung-hoon begins to feel uncomfortable and confused. She is not only attractive but also has a strong influence, making it impossible for him to ignore. Sung-hoon even finds himself gradually drawn into this relationship, even though he tries to resist.
But as the relationship between Sung-hoon and his stepmother becomes increasingly heated, he is faced with a difficult choice. Can he continue to resist his feelings or will he realize that this could be an opportunity to build a new and happy relationship? It's time for Sung-hoon to face the truth and learn how to adjust to this new situation.