A simple hunt for rabbits to celebrate Alexander's first bow becomes a trial by fire that shatters Jewel's innocence. Her brother, frustrated by a day of missed shots, foolishly looses an arrow at a monstrous boar, a beast of legend. In the ensuing chaos, Jewel is brutally mauled, her body crushed and her throat collapsed. She is saved only by the desperate intervention of a footman and the timely arrival of three wizards, who heal her with a brutal, muddy magic. The event is a brutal lesson in the limits of her own power and the fragility of those she loves, forcing her to confront the reality that she is not invincible and that her family's safety is her responsibility.

The arrival of the wizards, particularly the smug cat Fizzbunches, throws the Rochford household into political chaos. They have come to study Jewel, the first wyrm to hatch in seven centuries, and their presence forces a reckoning. In a moment of desperation, Father pledges one of the wizards to service in exchange for healing Jewel. This leads to the boisterous Boar Festival, where Jewel learns to truly dance for the first time, discovering a magic of rhythm and joy that is entirely her own. The festival culminates in Father's choice of Tsulogothulan, the Bog Weird, as the family's sworn wizard, solidifying the supernatural protection around the house.

A summons from their liege, Countess Bathory, forces Jewel and her family to travel to the city of Kaeketeh. The journey is a gauntlet of prejudice, where Jewel must constantly prove she is a person and not a beast. In Kaeketeh, she discovers the true stakes of her existence: the Countess is preparing for war against the King, who wants to claim Jewel for himself. Jewel is forced to demonstrate her destructive power, burning a mock army to ash, and is horrified to hear the other lords discussing her as a piece of property to be inherited. The Countess quashes this talk, but the threat of war and the reality of being seen as a weapon now hang over Jewel's every moment.

Winter passes with intense training, and spring brings the full muster of the army. The manor is transformed into a military camp, and the familiar fields of Rochford are filled with thousands of soldiers. Jewel takes to the skies as a scout, learning the slow, grinding reality of a military campaign. The arrival of Fizzbunches and a coalition of wizards, including the famed Urul the Written, solidifies the army's magical might. The story closes with the army marching north to war, leaving behind the home Jewel has always known, her childhood officially over as she flies into a conflict that will decide the fate of her family and her very right to exist as a person.