This game Ghost or Trick — is a new adventure game about the secrets of a ghost that appears at the villa. This story takes place in a world slightly different from ours. In some city of a certain country there was a detective agency. All the detectives who were part of it were strange. This was because they only investigated cases involving ghosts and monsters. Then a request comes to them. The player becomes an assistant to Detective Arthur and together with him tries to get to the bottom of the matter. The ghost appears at the villa of the nobleman. Jake or Jessica, who was assigned to work as a detective’s assistant for only seven days, begins a ghost investigation with Arthur.