The "Special Public Security Fifth Division Third Mobile Assault Eighth Unit," or "Unit Eight," is a police unit specializing in dealing with criminals who wield dangerous wearable technology known as "Willwear" in a post-disaster Tokyo. Equipped with Willwear of their own, the squadron is frequently chastised by the public for their carelessness and disregard for protocol. Asami Kazari is the newest member of Unit Eight, having been sent in by the government as an undercover spy with particular orders from the higher-ups. Determined to sort through what she thinks to be a bunch of inept jerks, she instead discovers a group of well-intentioned professionals who employ highly effective—albeit unconventional—methods while being hampered by severe constraints. In Active, Unit Eight battles crime and overcomes unforeseen foes with the help of their newest recruit.