"He must be slowly broken down from within." The assassin Sohwa enters the palace as a court maid to seduce the tyrant Yugeon. But Yugeon, who suffers from both mysophobia and bouts of madness, never lets a woman near him. "If you touch me, you'll be tainted too." On the nights when the emperor’s madness awakens—Chimya— Sohwa takes night watch in Yugeon’s chambers, aiming to bring him down. But as Yugeon falls to her lure, he begins to grow dangerously obsessed with her…