For millennia, Abel has walked the earth as its secret guardian. The first immortal, he is bound by a divine duty to hunt the supernatural monsters that prey on humanity-a lonely, endless war. His solitary existence is shattered by the arrival of two new forces: Isabella Thorne, a brilliant and powerful witch whose lineage is tied to a past Abel thought was buried, and an ancient, malevolent architect of chaos who has begun a systematic campaign to unravel reality itself.

Forced to forge an alliance, Abel and Isabella, along with a council of formidable allies, wage a desperate war that takes them from the haunted catacomS beneath New York to a besieged mountain fortress. But their victory against this terrible foe comes at an unthinkable price. In saving the world, they are forced to break it, shattering the veil between realms and leaving a permanent, bleeding "Scar" on the planet.In the chaotic new age that follows, monsters no longer hide in the shadows, and two ancient armies-a conclave of aristocratic vampires and a militant faction of Fae-are now in a race to claim the Scar's terrifying power. Abel and his council must make one last, desperate stand: to fight both armies at once and become the guardians of a new, broken, and unpredictable world.