The Kanagawa Prefectural Police’s Investigation Support Analysis Centre is a unit which tackles criminal investigations by using big data collated such as footage from some 5 million surveillance cameras nationwide. Fushimi Kyosuke a former detective with the Prefectural Police’s First Investigation Division, is a special investigator whose loved one was murdered by a serial killer. The other members of the unit are civilians including a former university professor in criminal psychology who is an expert in profiling, a single mother who used to be with the Self Defence Forces and a young genius hacker. They seems like a dream team but all of the members are former criminals with dark pasts.