The Japanese police department formed a specialized unit called STAND to tackle the growing problem of drug-related crime. Rei Izumi, a novice narcotics officer, is tasked with recruiting members for the unit, leveraging her strong sense of justice and immunity to many types of drugs. Rei's efforts are hindered by the complex personalities and motivations of the candidates, who have varying levels of interest in joining STAND and addressing the drug issue. Her investigation leads her into a treacherous underworld of deceit and secrecy.