For centuries, Xel has loved her fellow warrior, Xi. Always aloof, Xi may give Xel his time, but he has never given her his heart. To make matters worse, Xel has been harboring a secret. She has the power of flames. A power that if discovered by the king of the underworld can lead to a life of servitude by his command. Xel thought her life was as good as she could hope for. That is until a stranger crashes into her world.
Teya is a Sentinel, a leader of the earthbound warriors, and he's tasked to collect information from the Bone Gatherers on the demon infestation. But when he meets Xel, his mission changes. Engrossed by her beauty, he discovers her secret and begs her to join him in the underworld to train with the other Sentinels.
Leaving her family and Xi behind, Xel embarks on a new journey with the mysterious Teya, who worships her in ways she never knew possible. But when Xel suspects there is more to the underworld than meets the eye, she longs for home and the man who has held her heart for centuries. Torn, Xel must choose between the man who adores her or the one who has stoked the flames within her for centuries.
The wrong choice could mean not just her death, but the destruction of everyone, and everything, she's ever loved.