A high-teen mystery thriller about a close relationship between teenage girls in a harsher survival competition than entrance examinations.
Lee Hye-ri
Yoo Je-yi
Chung Su-bin
Woo Seul-gi
Kang Hye-won
Joo Ye-ri
Oh Woo-ri
Choi Gyeong
Kim Tae-hun
Yoo Tae-joon
Chae Seo-eun
Jo Ah-ra
Choi Young-jae
Nam Byeong-jin
Kim Sang-ji
Beom-soo
