Monica Croen is an 18 year old high school senior. She is also a youtuber and hosts a channel specialized in the research of old manuscripts and grimoires on magic. She tells their history and tries to get them. She also restores those she recovers in bad condition, or even reconstitutes them from scratch. Intrigued by a comment about the Necronomicon, left under one of her videos, a manuscript that she considers to be fictional and invented by the novelist H.P. Lovecraft, she meets Falco, the Internet user who left her the message. He brings her the first proof of the existence of the Book of the Dead. He explains to her that it was in the hands of one of her ancestors and that since then, her whole family has been under an evil spell whose ultimate outcome will be dramatic. His only hope is to get his hands on the book to break the curse. Monica, fascinated by the idea of being able to get her hands on the most dangerous manuscript on the planet, begins an investigation and follows the trail of the cursed manuscript by questioning the people around Falco. Each of them brings her more and more disturbing information that will allow her to reconstitute the history of the family line and its link with the Book of the Dead like a puzzle, while getting closer to the book. The more her investigation progresses, the more she feels the anguish and the horror invading her. In the mythology of the cursed grimoire, the Book of the Dead is considered dangerous, because no one is left unharmed after reading it. Monica knows this deep inside, but she can't resist the desire to find it. She ends up going deep into the morbid history of Falco's family, until she loses her mind.