Half-blood dragon Seraphina cannot shift, is publicly jilted by her fiancé Damon, and has her scales crushed underfoot by pure-blood princess Vexia. On the eve of her coming-of-age ritual, in defiance, she spends a reckless night with a stranger — only to wake and learn he is Silas, the youngest Dragon King. Her dormant dragon blood reignites and an invisible burn marks her palm. At the ceremony where everyone expects her to fail, the dragon flame bows to her: the grand priest announces she holds ten-tenths flame capacity. The king who watched coldly from the side had, the night before, exchanged his own blood into her veins.