When a global disaster strikes, mysterious ability users begin taking their lives after a strange fog emerges. The Armed Detective Agency takes on the task of unraveling these enigmatic suicides. Central to the investigation is a shadowy figure known as the 'Collector,' suspected to be orchestrating the chaos. As Yokohama and ability users face peril, the agency must forge an uneasy alliance with the notorious Port Mafia, challenging notions of trust and bravery in a race to thwart the Collector's sinister plans.