A story about a group of female geeks working at a police station. Yui Saijo is a forensic officer with good memory and evidence analysis skills. Masumi Kira is an industrial physician specializing in psychological analysis. Iori Motoyama, who works as a traffic officer, has very good knowledge of geography. These three women are smart, but have difficulties dealing with people. Their life motto is "no overtime", but they always do their best to solve cases even by meeting during the weekends.
