Grace O’Malley was born to be a sea captain. But despite her natural skill on the water, Grace learns early that her dreams of a life at the helm are not compatible with the expectations of her noble family. As the only daughter of a powerful chieftain, her role is to secure a strong alliance and bear children. But when she’s sent to foster with a nearby clan, Grace falls for a clever and open-minded second son—a man she cannot have.

Married off against her will to a brutal warrior, Grace performs her duty, all the while gathering followers loyal to her, and consolidating her husband’s power, only to be ousted from his lands. But this betrayal offers Grace the opportunity to return to sea, finally leading clan O’Malley’s mighty fleet. Just as she finds true independence, Queen Elizabeth’s incursions into Ireland grow bolder and Grace must fight to defend her land, her ships, and the people she loves most against the cruel and power-hungry English deputies, who will stop at nothing to check her influence.