A group of friends discover an ancient book, the Necronomicon, the Book of the Deads. They discover that the book is a link between our world and the world of ancients creatures, older than our civilizations.

Salamanca, Spain, 1936. In the early days of the military rebellion that began the Spanish Civil War (1936-1939), writer Miguel de Unamuno supports the uprising in the hope that the prevailing political chaos will end. But when the confrontation becomes bloody, Unamuno must question his initial position.

Follows Juan, an agent working for the intelligence services, who also reports to a parallel unit involved in illegal activities.