Meara is content to forage for medicinal herbs in the quiet of Sablewood forest, far from the bustle of her rural village. Her sister, Brenna, is the opposite, a bright, curious social butterfly. But when an attack triggers elemental fire magic within Brenna, the sisters are forced to flee into the fae lands they were taught to fear.

In the Court of Autumn Harvest, Brenna is spellbound by the fae's feral beauty and decadent culture. As she searches for the truth of their parentage, she draws the dangerous attention of Emrys, a vampire-faerie prince of the High Court.

Meanwhile, Meara struggles to access her abilities. She finds herself caught between the Autumn Lord and his rival, the heir of the Summer Court, whose light can draw out her shadowy magic. Meara must decide whom to trust before war ignites between the fae courts and the newly allied human kingdoms.