In the twin kingdoms of Lyray and Solara, magic is the blood of royals—and love is the most dangerous kind of power. Princess Aveline of Lyray must protect her kingdom, but when the enigmatic Prince Kael arrives as an envoy for Solara, their fragile truce is shattered by a deeper threat: a magical plague known as the Fading Sickness. Drawn together by fate and an ancient relic—the Starlit Throne—Aveline and Kael must forge a forbidden, secret alliance. To save their people, they must trust in a love that could either unite their kingdoms forever... or cost them everything.