The Midnight Spirit Tracking Agency founded by Li Xiaofan has received a series of supernatural commissions: a haunted old house, a company haunted by monsters, a mysteriously missing school sister, and the confusing ghosts of an ancient town. The protagonists shuttle between humans and ghosts carefully and wisely while solving puzzles and exploring. The story in the three volumes progresses, involving secrets of the world, grudges in the underworld, real crises, and challenges that continue to escalate. In the end, they uncovered the secrets that had been sealed for many years and broke the barrier between ghosts and humans; the members of the agency also completed their own growth and transformation, and the story ended successfully with humor and warmth.
