Izawa Norito (Sawamura Ikki) is a former elite detective of the Tokyo Metropolitan Police’ Public Security Department. He transferred from this department to be the director of the General Affairs Department’s Documentation Division after some incident occurred. It is the place where troublemakers are gathered to get rid of them. The Documentation Division is actually a cover for these drifters (Yokoyama Yu, Honda Tsubasa, Emoto Tokio, Hirata Mitsuru) to proceed with missions for an important project which is being conducted in secret. This project involves aggregating data such as the personal information on Japanese citizens, surveillance camera footage nationwide as well as email and phone data. It is analysed and compared with data on crimes that took place in the past 15 years to find dangerous people with a high probability of committing grave offenses, primarily murders before these happen.
(Source: JDrama Weblog)