Mer-Queen Serapha has been murdered. The already fragile human-merfolk truce is shattered. And as Angie and Kaden find themselves on opposite sides of a rapidly escalating conflict, their loyalties to their families, their people, and each other will be tested.

When news of the merfolk become widespread in Angie’s Pacific Northwest town, she fights to protect the mer from those who wish them harm. But as vicious seas consume coastal cities and tragedy strikes her town and her family, she’ll need to decide whether to save her family and her people, or her relationship with Kaden and the mer.

In Mer-Prince Kaden’s queendom, an unlikely family member takes the throne, sowing dissent among the already fractured queendom and further straining their deteriorating relationship with humans. Branded a traitor for loving a human, he must make a choice between letting his family plunge the mer into all-out war, or fighting for the throne to unite his people, but leave Angie behind, as he can never take a human queen.

A cataclysmic war between humans and mer looms, and if Angie and Kaden cannot find a way to bring peace between their people, they’ll find the fragile mer-human truce shattered beyond repair, and the sea-crossed lovers will find themselves separated forever.

Unless the mer drown the world in their rage and sorrow, first.