When a rising tide of witch hunters threatens to extinguish their kind, sisters Calliope and Calypso must unravel the dark secrets of their mother's past, and what they discover leads them deep into a hidden world. Among faeries who defy gender, sea witches who bend reality, and mystic animals who know too much, enchantment itself has become a death sentence.

Forbidden loves flicker at the edges of their journey, but the true battle is for survival. To protect their bloodline, the sisters must awaken powers they never imagined... and face the ruthless force that will ignite centuries of persecution.