Mister B. Gone is a novel written in the first person from the perspective of a demon called Jakobok Botch, which is trapped within the pages of the book.

After pleading for the reader to burn the book, the demon recounts the story of its life.

It begins with its life in the First Circle of Hell with its abusive family, then being trapped and dragged to the human world by a demon-hunting priest, befriending a much more powerful demon to terrorize the country, and eventually the story of how it became trapped in a book.