Shimura Teppei (Fujigaya Taisuke) grew up watching his policeman father who would ride side-by-side in marathons because he was a motorcycle cop, and dreamt of being a marathon runner as a child. But Teppei’s father lost his job and disappeared. Teppei ruined himself by becoming a well-known delinquent in the area. Under the influence of his childhood friend, Yuichi, Teppei chose to become a policeman after graduating from high school. He miraculously passed the recruitment exam and entered the police academy. However, he has been assigned to a “class of reserves” (Goriki Ayame, Koyanagi Yu, Okamoto Azusa, Mizusawa Erina, Ishii Tomoya, Mori Ren) which is a gathering of odds and ends. There are eight of them and each day they are only instructed by the assistant teacher, Ryuzaki Misaki, to sweep the academy grounds … …

Shimura Teppei a grandi en regardant son père policier mais il rêvait de devenir marathonien. Un jour, le père de Teppei a disparu. Teppei est ensuite devenu un yankee. Sous l'influence de son ami d'enfance, Yuichi, il choisi de devenir policier et est entré à l'école de police. Cependant, il a été affecté à une "classe de réserve" qui est la classe des candidats à faire abandonner. Ils sont huit et chaque jour, ils ne sont chargés par l'assistant Ryuzaki Misaki uniquement de balayer le terrain de l'académie ...

24시간 엄격한 감시, 관리 하에 교육되는 경찰 기숙학교를 배경으로, 각자 나름의 문제점을 안고 있는 3명의 남녀 신입생들이 만들어가는 청춘 성장 드라마