The Metropolitan Police Department has newly established the "Finger Murder Countermeasures Office" = Finger Pair (Yubitai), which is a specialized department for consultations from citizens with the aim of eradicating false accusation such as SNS. The members are all strangers, including Wataru Manjo (Shingo Katori) , who have both habits and habits. At that time, the parents of Kozue Sanada, a model who committed suicide suffering from accusation, visited and complained in tears that her daughter was killed by the heartless words of anonymous humans. Upon hearing that, Sakiyoshi Usui (Nagisa Sekimizu) , a new detective, promises, "I will definitely arrest the criminal!"
A fictitious department "Finger" established within the Metropolitan Police Department to deal with the social problem of keyboard murder = finger murder, in which the victim commits suicide in the worst case, suffering from slander and burning on the Internet.
