Raised in secret by the sea's most feared pirate, Esmyra Blackwood knows nothing of her past or the origins of her mysterious powers. In the mortal kingdom, Draevyn Rowe is the second-born son of the tyrant king, and the only known fire-wielder of their realm. Esmyra and Draevyn's journeys collide when she kidnaps him to force a trade with the king for her captain's life. But when her barter is refused, she is instead tasked with unearthing a kingdom lost a thousand years prior. Together, the two are forced to navigate a labyrinth of lies and secrets in search of the sunken kingdom. The tides are shifting, and with scheming gods and ancient rivalries at play, alliances will be forged and shattered. The two must decide who to trust, and how far they're willing to go for the ones they love. Esmyra will face a choice: Does their world deserve salvation . . . or will she be its reckoning? Contains mature themes.