Mother, boyfriend and son. It’s a world that includes a mysterious love triangle. Hae-jin, who is currently in his 3rd year of high school and Yun-gyung, the young man his mom is currently dating! “Do you have feelings for me?””What should I do if my mom finds out…?” Hae-jin and Yun-gyung’s feelings grow bigger towards each other as they meet more often. Even Baek-eun Hae-jin’s mom and Yun-gyung’s girlfriend has started to notice the things happening between the two of them. The story of two people who secretly grow feelings for each other!!What’s going to happen to these three people…???!!!