Sixteen-year-old trainee Kim Yoon-ju earns a spot on the hit survival show Idol School with her killer vocals and rap skills.
But once the competition begins, she learns the truth: her agency has already chosen Jeon Min-ah to debut, and Yoon-ju is only there to make her look good.
Refusing to be anyone’s backup plan, Yoon-ju decides to fight her way back to center stage—and earn her debut on her own terms.