Tormented by violent nightmares and ruthless palace assassination plots, paranoid Crown Prince Lee Hyun trusts nobody inside the treacherous royal court. Desperate to liberate her wrongfully imprisoned father from imperial dungeon cells, humble female physician Yeon-seo accepts the perilous appointment to attend the guarded prince through his nocturnal crises.
Behind closed bedchamber doors, Yeon-seo's steady acupuncture and unwavering bravery gradually pierce the prince's cold defenses, igniting a dangerous nighttime intimacy. As rival ministers discover their clandestine bond, Lee Hyun must choose between executing his royal duty or sacrificing his throne to shield the physician who saved his sanity.
