Description

During fourth period, high schooler Da-jeong finds her classmate Tae-gyu dead in a classroom and Jeong-hun standing in front of him with blood on his clothes. In order to stop Jeong-hun from becoming the prime suspect, Da-jeong must help him find the real murderer, who is still inside the school building, under 40 minutes before period four ends.

Cast

Yoo Seung-ho

Kang So-ra

Jeong Seok-yong

Lee Yeong-jin

Im Soo-hyang

Jung Young-ki

Park Cheol-min

Oh Jin-ha

Kim Min-su

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