With just one week left until the performance of "The Brave Cinderella" by Xiantang Elementary School's opera troupe, Lucy, the lead actress, strains her voice due to excessive rehearsal. In a twist of fate, her friend Cindy, eager to help Lucy regain her voice, steps in as the understudy. Faced with the opportunity to take the stage and her friend's doubts, how will she choose? Will the friendship of the Team Princess be shattered?