The novel revolves around a mysterious system called the "Fierce Ghost Containment System." The protagonist is drawn into a job that involves the containment and management of ghosts, tasked with capturing and managing various types of spirits. Throughout this process, he must confront terrifying and unknown supernatural events, delving into the stories behind the ghosts to uncover their pasts and unfulfilled wishes. As the story progresses, the protagonist gradually discovers a larger secret hidden behind the Fierce Ghost Containment System and its connection to his own fate. After experiencing numerous crises and challenges, he transforms from an ordinary person into a powerful figure capable of facing supernatural events, while also exploring profound themes of humanity, life, and death.