On the mist-shrouded Isle of Eireann, buying magic comes with a price. But when Maeve's older sister is gravely injured, she risks everything to buy the forbidden magic that might save her. In exchange, Maeve trades her life to a ruthless and dangerously alluring rebel leader, Wolf. Bound to do his bidding, Maeve finds herself thrown into a deadly competition to become the next queen and stand beside a prince rumoured to be more brutal than his tyrannical father. With the isle on the brink of war, trust and survival come at a terrible cost – one that will tear Maeve's world, and her heart, in two.