24-year-old Haneul Yeon both dislikes and envies Bunhong Jin, the girl who was mean to her in middle school and a popular idol who happens to be close to Haneul's favorite idol, Robin. Haneul's dream of switching places with her becomes a reality when the two of them end up swapping bodies after an accident. Haneul is overjoyed to be an idol and to see Robin frequently, but does she have what it takes to live the life of an idol?