Sunny (Sseo-ni)
Na-Mi, a village girl who moves to Seoul, meets six brave girls who take her into the "Sunny" group. Together, they face bullies, pledge allegiance, and prepare for the school play—until tragedy separates them. 25 years later, Na-Mi, who now lives a perfect life, meets Chun-Hwa again, who asks her to look for their old friends. Will they be together again before it's too late?