The week of her wedding, Lady Tessamine Canyon is jilted by her betrothed, Prince Linden. Left utterly humiliated, Tess betrays a tightly guarded secret to an enemy spy--a decision that throws the Dione of Glademont into chaos. Hunted by bloodthirsty mercenaries, Tess flees into the Hinge Forest. There, with the help of a wild owl and a two-hundred-year-old bear, Tess begins to unlock the forgotten mysteries of her people.

Deep in the woods, the spirit of a long-dead dryad awaits the next Thane of a fierce weapon. To Tess's amazement, it is she who is called to master the weapon's power and save Glademont from an impending war.

When a surprising turn of events reunites Tess with Linden--the prince who called off their engagement--Tess must swallow her pride and join forces with him. But even if Tess can rescue her people, will that be enough to forgive her treason? Armed with a fiery magic, Tess is forced to make an impossible choice, one that might seal her fate as the next Thane--but forever extinguish any chance at following her heart.