In the dazzling city of Solas, historian Elara Niamh lives a quiet, solitary life. Her only companions are the ancient books she spends her days preserving. But when she discovers a mysterious, forgotten manuscript, her world is turned upside down. Strange symbols begin to glow on her arm, a powerful force is awakened, and Elara is thrown into a deadly game of survival.
The city's most feared Sentinel, Aiden Marcellus, arrives just in time to save her from the clutches of the sinister Wraiths—beings twisted by dark magic, who will stop at nothing to claim the power hidden inside her. But even Aiden, with his unwavering resolve, can’t protect her from everything. As they flee through the rain-soaked streets, Elara learns of an ancient prophecy, and that her power is the key to either saving or destroying the world.
Worse still, General Lucian, the ruthless commander of the Blackguard, declares that Elara belongs to the Crown, and her fate is no longer her own. With enemies on all sides, Elara must decide whether to trust Aiden, who harbors secrets of his own, or to confront her destiny alone.
As hidden truths unravel, and love and betrayal tangle in dangerous ways, Elara is forced to face the reality of her growing power—and the devastating choice she must make. Will she save the world from darkness, or will her untamed magic bring about its destruction?