Based on the novel by Moscareto.

Yuseong, who is now a manager, used to be an idol trainee 10 years ago. Becoming the manager of Seo Tae-won, who he has a crush on. He managed to compromise on reality, and he was living without dreaming his dream. In response to the boss's threat to overturn the hit-and-run accident committed by Seo Tae-won, he takes the blame and step to the police station. "I wish I could go back to 10 years ago. I won't give up, and I'll make my debut at any cost." When I closed my eyes and opened my eyes...