Concubine's daughter Seraphina Sutton, skilled in Bian Stone Therapy, forced by stepmother to marry Alistair, rumored paralyzed Marquis Valor's Reach. Wedding night, Alistair's Frost Toxin acts up. Seraphina saves him with Bian stone, framed. She saves Grand Princess's daughter, uncovers poisoning plot, Chancellor Warren's embezzlement/coup. Alistair feigns illness to lay a trap. They join forces, crush rebellion, Seraphina avenges mother. She becomes Marchioness, lives happily with Alistair.
