A text message arrives from a dead friend. Since then, mysterious cases take place in a high school, which are intricately tangled with each other. Five mystery club members get together to reveal the truth of the mysterious incident at school.
Kim Dong-hyun
Kim Dong
Yoo Byung-jae
Oh Dae-yang
Park Ji-yoon
Self
Jang Do-yeon
Shin Kyu-jin
Lee Doo-geun
BIBI
Jason Scott Nelson
George Bushman
Choi Ye-na
Choi Sung-min
Hwang Sung-min
JAEJAE
Moon Sang-hoon
Kim Jung-ho
Kim Du-young
Min Jung-eum
Kim Doo-hyun
Kim San-moon
Kim Yoon
Cha Soo-yeol
Han Seo-in
Gook Ji-hee
일주어터
No Da-hee
Choi Min-gyu
Directing | Director
Choi Yoon-hee
Heo Gang-seok
Jang Yong-min
Jeong Jong-yeon
Kim Ah-rim
Kim Man-hee
Lim Soo-jung
Yoon Hyeong-seob
강소정
박민지
박혜미
정인혁
Ko Min-gu
Production | Executive Producer
Lee Won-hyoung
Park Hee-yeon
Park Seong-jae
Gong Yeon-hui
Writing | Writer
Heo Jung-hee
Jung Da-hee
Kim Min-joo
Park Hee-gyeong
고아해
김지윤
윤이나
허소영
Jang Yeon-ok
Art | Art Direction
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