Being kidnapped by a crazy merman was the last way Amora Bloom expected to spend her Saturday evening.
Amora never believed her grandmother's silly stories about the folk that lived below the ocean's depths. Or so she thought until her grandmother gives her a mysterious necklace. With the necklace comes strange dreams of a man with eyes as vast and blue as the sea itself begging her to come home, an uncontrollable desire to collect seashells and shiny things, and a yearning to jump in the ocean and never emerge.
Then Amora rescues the man from her dreams from a fishing net near the docks, and is shocked to find that he has a tail. Raving about how she is his savior and needs to come home with him, the man drags her into the ocean, stealing her away from everything she has ever known.
Beneath the waters, Venrynn, a merman and prince of his people is facing the rage of war. An uprising of rogue merfolk is bringing death and devastation to not only his home, but the world above. His only hope of saving his world and stopping the rising epidemic of humans being pulled into the ocean and torn to shreds is finding the last of the sea witches. Desperate for salvation he scours beaches in hopes to find the rumored sea witch, a woman who has managed to make her way on land. And he believes he has found her when he gets caught in a fisherman's net and she saves him.
There's only one hitch in Venrynn's plan to save his home. The woman he has found is no sea witch. She is hardly a mermaid. Can he rely on a human to save his people, when it is humans who encouraged the war in the first place?
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.