In the ancient city of Valtoria, young archaeologist Isla stumbles upon an artifact hidden deep within the forgotten catacombs-an artifact that awakens Draven, a powerful vampire lord imprisoned for centuries,who is also known among some as Valtherion. But Isla's discovery does more than free a monster of legend. It breaks the seal holding back an ancient demonic force, now poised to rise again. Bound by fate and hunted by enemies from both the underworld and the shadows, Isla and Draven must form an uneasy alliance to stop the demons from crossing into the mortal realm. As war looms and dark forces stir, the lines between good and evil blur, and Isla is forced to confront the truth about the ancient powers she has unleashed-and the darkness growing within herself. The world's only hope lies in secrets buried deep within the city's haunted past, and in a vampire with his own deadly agenda. Will Isla and Draven be able to stop the coming apocalypse, or will the night claim them all?