Kpop idols, Mingyu of Seventeen and Sung-hoon of Enhypen, fall in love amidst their busy careers. Despite challenges and rumors from jealous fans, their families, and fellow group members support their relationship. They collaborate on a song and a world tour together, strengthening their love and bond. However, a wealthy fan's obsessive behavior causes trouble for the couple. Ultimately, Mingyu and Sung-hoon overcome the challenges and continue their happy relationship.