A children's mystery drama about four kid detectives solving various cases happening at school.
Top Billed Cast
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Kim Ji-min
Kang Ha Ra (16 episodes)
Tang Joon-sang
Lee Seo Jin (16 episodes)
Yoon Chan-young
Lee Woo Jin (16 episodes)
Yoo Jun
Choi Dong Yeong (16 episodes)
Park Si-eun
Jin Sun Mi (16 episodes)
Heo Jung-min
Choi Gi Chan (16 episodes)
Kim Myung-soo
Kang Suk (16 episodes)
Uhm Hyun-kyung
Song Soo Ji (16 episodes)
Choi Shang
Teacher Ma (16 episodes)
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