The Adventures of Fei Duanmu drawn in anime style and is an interactive novel with the ability to influence the events that take place. This can be done when communicating with characters, choosing certain answers in dialogues, as well as at key moments, performing available actions. The game is a collection of stories about a private detective Duanme Fei, but he investigates not ordinary criminal cases, but those that have a supernatural nature.

Each episode of The Adventures of Fei Duanmu is filled with its own characters and mysterious cases that police investigators would never solve. The only constant is the deadly dangers that await the man at every step of his adventures. This man has the necessary thinking, able to look far beyond the usual for everyone, which is an advantage in such a job. Duanme often drinks coffee and puts together complex combinations of conclusions in his head based on evidence and witnesses' answers.

All the events unfold in a town called Lianghai, where in one of the stories a series of mysterious murders occurred. Each victim was thrown from a very great height, which may seem like a strange way to kill even for a serial killer. The episodes describe mysterious cases that require visiting crime scenes, interviewing people who may have seen something, and painstakingly collecting information to solve.