"To enter Faerie's blessed demesne

four secrets must be found:

the land unbound by time and space

opens only to the one who knows

the Light, the Song, and Mortal Gate."

In the sheltered town of Carmel, women do not have a future outside of a good marriage. That future is threatened when Leah Edwards' father gambles away the family's livelihood and estate. She and her sisters must hurry to find husbands. Then August Fox, a Guardian from Cariath, comes to town and purchases a supposedly haunted manor. Charged to keep the peace between mortals and Faerie, the Guardians are the stuff of legend. After he stuns her with a marriage proposal, Leah reluctantly journeys to Cariath, discovering there is more to August and the legends than she guessed.

Nimrod and his Oath-breakers betrayed the Guardians, seeking to solve an ancient riddle that would unlock the Faerie realm. Not all his followers share his desire for conquest. Benedict Fox, his second-in-command, has different motives. But as he continues fulfilling Nimrod's plan, Benedict hurtles towards a choice between saving his family and settling a personal vendetta.

For Leah, August, and their allies, it is a race against time to solve the ancient riddle before the Oath-breakers, and reunite the Guardians to save the mortal realm. The war is never really over, and this time, the battle lines cut through blood ties and brotherhood.