Emet is already over seventy. He lives out his life, carrying with him everywhere a creepy ancient book that he inherited from his father. Gremula is the name of this book, and it was kept by Emet’s family for many generations. As far as the old man knew, with the help of Gremula you can summon demons and do incredible things, but Emet himself, like most of the inhabitants of the Kingdom, did not really believe in any evil spirits. Until then until a stranger took possession of Gremula and called the creatures of other worlds into the World.