Kana, a girl who excels at dancing and dreams of becoming a K-pop artist, and Kei, a young man with a natural singing voice who has already made his professional debut, are involved in an accident. As a result, Kana's consciousness is transferred into Kei's body. Their dreams and hopes, despair and struggles become intricately intertwined as the two, now sharing one body, create a unique chemistry as a single idol!