The King, Joo Jin-mo of Goryeo is married to a Yuan Dynasty princess, but the marriage has produced no children. The weight of that sterile reality presses not only from the Yuan emperor but also from the king’s own counselors who insist on securing a crown prince to safeguard the dynasty’s future. The palace guard, thirty-six young soldiers under the command of Hong-rim Zo In-sung—who is also the King’s lover—serves as a private circle surrounding the monarch. When the King finally issues a startling order, Hong-rim is tasked with a cruelly intimate mission: to enter the Queen’s bed and help precipitate an heir. Despite a shared sense of unease, the two lovers accept the commission, and what begins as a calculated royal decree gradually deepens into a dangerous, forbidden romance that begins to eclipse the official purpose of their relationship.
From midnight encounters in the palace library to secret exchanges away from prying eyes, the couple’s clandestine meetings intensify. The King’s suspicions flare when a junior commander provides evidence of lingering affection between Hong-rim and the Queen, forcing him to confront a truth that could topple the throne. In a bid to test the depth of Hong-rim’s devotion, the King decrees that the Queen should continue to bear an heir, but this time with another subordinate. The scene shifts from heat to cold calculation as the King screens the lovers’ loyalties and refuses to relent. The Queen, driven by pride and fear, attempts to take her life, while Hong-rim offers himself as a sacrifice to protect her. The King, moved by a momentary mercy, pardons Hong-rim and sends him away to “clear his thoughts,” still clinging to the possibility that a return to duty might heal the rift.
In a devastating turn, the Queen’s maid arrives with news that the Queen has conceived. Hong-rim sneaks out to meet the Queen one last time in the library, and their passion erupts anew. The King walks in on them, their secret exposed in a moment of explosive betrayal. In a furious, merciless judgment, he castrates Hong-rim and imprisons him, leaving the Queen to navigate a labyrinth of fear and longing on her own. Yet the Queen’s resilience remains intact as she orchestrates a plan to save Hong-rim’s life and secure a future for their child, even if it means risking everything.
The Queen’s maid is killed by the King when she refuses to reveal the lovers’ whereabouts, and the Queen discovers she is pregnant. With the King’s paranoia escalating, he orders the execution of all who know the truth, sparing only his junior commander who has stepped into a leadership role under his rule. Meanwhile, Hong-rim’s loyal subordinates mount a desperate effort to free him, but their escape is thwarted by the king’s iron will and brutal authority. The heads of those who helped perpetuate the ruse, including the Queen’s maid, are displayed on palace gates as a cruel message meant to deter any further revelation.
Back in the city, Hong-rim learns that the Queen has not fled as his subordinates were told; he realizes the futility of his mission, yet the path of vengeance remains tempting. He returns to the refuge only to learn that his men have been captured. The King subjects his remaining subordinates to torture as he presses for the truth, ultimately ordering more executions and piling their heads on the gates—plus the head of the Queen’s maid, so that Hong-rim might think the Queen is dead and be driven into a rage. Yet the Queen survives, and she remains the fulcrum of the last act’s tension.
Disguised as a soldier, Hong-rim breaches the palace during a homecoming celebration and makes his way toward the King. The two men confront one another in a brutal, cinematic duel that tests not only their physical prowess but the limits of love, loyalty, and power. The junior commander and his men arrive, though their motives are not entirely clear, and the King orders them to stay back as the climactic fight unfolds. When the King’s painting—the emblem of their shared past—sits as a casualty of the duel, Hong-rim presses on, and the King’s sword shatters, leaving Hong-rim with a final, deadly choice.
In a quiet, devastating exchange, the King asks Hong-rim if he ever felt love for him. Hong-rim’s stark reply, “No,” shatters the moment and gives him the resolve to sacrifice himself by throwing the remaining blade into the King. The King dies as Hong-rim sinks to the floor, mortally wounded by the guards who close in. The Queen arrives at the scene, horrified, as Hong-rim’s life drains away with a look that captures the ache of a love that could never be permitted to coexist with courtly duty. The junior commander announces that the King was killed by an assassin, urging his men to keep the truth hidden as the bodies are hurriedly removed.
The film closes with a poignant flashback to the moment when the young Hong-rim first stood beside the King and the King asked if he would live with him in the future. The young Hong-rim’s answer—“Yes”—is revisited in a final montage that shows the pair hunting together, echoing a dream within the King’s own painting and underscoring the tragedy of a love stifled by power and pained by secrecy.
