In a strict military environment, Mu Gwang, a disciplined and loyal soldier, finds himself entangled in a forbidden romance with Su-ryun, the young and beautiful wife of the division commander. As their secret love affair deepens, Mu Gwang struggles with his loyalty to his duty and his growing feelings for Su-ryun, whose own emotional turmoil and isolation in the rigid military world complicate matters further. Torn between honor and desire, Mu Gwang faces inner conflicts thvat could threaten both his career and the fragile loe they share, forcing him to choose between devotion to his country and the woman he loves.