Four high school girls navigate insecurities, challenges, and personal growth while forming deep bonds of friendship. As Oh Na-ri adjusts to a new chapter in her life, she finds support in her elegant childhood friend Yoo Na, protective classmate Sun Ji, and idol trainee Mi Rae. Together, they face struggles and discover the true meaning of friendship.

• Choi Ye-na
• Yoo Seon-ho
• Hwang Bo-reum-byeol
• Lee Won-jeong
• Han Chae-kyung
• Han Ji-hyo
• Kwon Hyun-bin
• Yang Seo-hyun