This drama tells the story of the special search team members, each with a strong personality, different ages, experiences, and environments, unique investigation methods, and frequent conflicts. However, based on years of trust, they can frankly admit their differences and form an efficient team. The new season depicts current social events in the form of a single episode, showing the diversity of crime. In his seventh year, the chief investigator Naoki emphasizes the image of a "new era leader", leads the team with empathy and respect for individuality, and shows his full response to human stories.