When soul exchange meets the idol's forbidden love - this accident completely throws the lives of two top idols into chaos.
Aespa's lead singer Ning Ning and ENHYPEN's lead dancer Park Sung-hun were rivals who had nothing to do with each other until a backstage collision and the two unexpectedly exchanged souls.
When Ning Ning opened her eyes, she found that she had become the face of a boy band and had to face muscle training, male social interaction, and even late-night chats with her teammates; while Park Sung-hoon was trapped in the body of the lead singer of the girl group and was forced to learn makeup, wear high heels, and had to deal with the sisters' night chats with the members of AESPA.
In order not to reveal their secrets, the two had to form a secret alliance and guide each other to play themselves. But as they get along day and night, they gradually discover the unknown side of each other - Ning Ning's stage fear, Park Sung Hoon's tolerance for back injuries, and the seeds of a secret love that were planted five years ago.
However, as scandals break out, the company puts pressure on them, and the mysterious red line on their wrists guides them, they must make a choice - return to the safe life of idols, or risk everything for this love that spans their souls?
"The red thread connects not only the body, but also the destiny."
Concept: "We thought we were exchanging bodies, but in fact we were exchanging understanding; we thought we were looking for a home, but what we finally found was a home."