A world ending apocalypse. Two desperate teenagers on a final quest. An ancient enemy awakens In this spellbinding conclusion to the Imaginaterium saga, our heroes Pierce Agyeman and Peter Aikins have managed to rouse El from his eternal rest but they have unwittingly brought the apocalypse upon mankind. As the two friends go on a final quest to stop the end of the world, they unravel secrets which shakes them to the core. They battle monsters, uncover ancient secrets and make new allies as their quest takes them to Purgatory and the ancient realms of the gods. On their journey they begin to question reality as they come face to face with ultimate evil. In their final quest the two teenagers must answer the ultimate question of why mortals are important to the gods. A new dawn approaches and the fate of mankind and the universe lies on the shoulders of Pierce and Peter and as always they have only one weapon at their disposal: their imagination but will it be enough this time as an ancient enemy of El awakens.