An ancient religious text is unearthed in the Romanian mountains.

The vampire Ian needs the book to exorcise the blood thirsty demon possessing his body.

Gabriella seeks to hide the book's dangerous spells.

Both become targets for the Church of the Damned, a vampire cult building an army of day-walkers by impregnating mortal virgins. The church will use the Requiem to raise the Seven Sorrows – the seven plague demons who will spread apocalyptic pestilence and sickness throughout the world.

Gabriella and Ian are thrust together to keep the book safe from the insane leader of the cult. While fighting relentless pursuits and betrayals, they find their desire to possess the book has morphed into a dangerous and passionate desire to possess each other.