While playing the horror game 「Go and Find Him」, she fell asleep and became the detective Astella in the game! Moreover, she sees a strange window in front of her. 〔You can only end the game by completing it until the ending. It is impossible to end it in any other way.〕 Astella has no choice but to collect clues and find the iron-blooded Grand Duke, Leuber. 〔Astella’s heart rate is increasing! Be prepared for danger!〕 After running away from the ghosts chasing after her, she meets a young man at the end… “Are you really Grand Duke Leuber Leonhard von Allen?” In fact, this place is Leuber’s nightmare. Astella must help him regain his abilities to escape the game! “What kind of crazy game is this!”