Aislen Caewyn has always known two things: the comfort of her quiet border village, and the steadfast friendship of Kael Duskthorn, her protective and infuriatingly loyal best friend. But when her nineteenth birthday awakens a rare and dangerous magic—one tied to a prophecy the courts have tried to erase—everything she thought she knew begins to unravel. Kael has unknowingly felt the truth for years: that Aislen is his fated mate, bound to him by an ancient bond neither of them can break. But telling her risks shattering the fragile life she’s built—and painting a target on her back for the rival Aurion Court, whose queen will stop at nothing to claim her power. Forced to flee their home, Aislen, Kael, and their small band of allies cross cursed forests, treacherous mountains, and shadowed ruins in search of the hidden Celestara Court. Along the way, old loyalties will be tested, secrets will come to light, and the bond between Aislen and Kael will burn hotter than either of them is ready to face. But every step brings them closer to the truth—and to the Sun Queen, whose magic could destroy not only the courts, but everyone Aislen loves. In a world where love is power and magic comes at a cost, Aislen must decide if she’s willing to embrace the bond… or risk breaking it before it breaks her.