Faye Monroe, a genius physician obsessed with curing impossible diseases, finds her greatest challenge in Crown Prince Julian—the victim of a deadly poison. To study him, she infiltrates the palace as a servant. Julian, believing Faye is a spy, tests her mercilessly, yet instead discovers unwavering loyalty. They strike a dangerous bargain: Faye will heal his body, and Julian becomes her primary test subject. But as she digs deeper, Faye uncovers a secret that shatters Julian's world and drags them into the heart of a conspiracy threatening the throne...