A high-teen mystery thriller about a close relationship between teenage girls in a harsher survival competition than entrance examinations.
Lee Hye-ri
Chung Su-bin
Kang Hye-won
Oh Woo-ri
Kim Tae-hun
Chae Seo-eun
Choi Young-jae
Kim Sang-ji
Lee Won-jae
Yoo Jung-Rae
Kang Jin-ah
Ma Hyun-ji
Choo Ye-jin
Ha-min
Lee Na-ra
