The Battle of Fairhaven is over, and Rose Evermore has fulfilled a promise to her best friend. Both return to the Other, broken and bleeding, as Lotheria slips back beneath the river. Now, the real struggle begins; finding a place in the modern world.

But as Rose attempts to reintegrate into her old life, she is unable to shake the temptation of unfinished oaths, a burgeoning war, and a mountain of guilt. Once again stepping back into the water, she knows she must finish what she started at any cost.

Joined by the unlikeliest allies and encountering strange new magics - ancient, forbidden, and stolen - Rose daringly returns to Lotheria as the new Queen and finds herself battling a foe she was entirely unprepared for, on a gameboard that risks everyone she ever cared about