In 1636, during the Second Manchu invasion of Korea, a skilled archer named Nam-Yi loses his father to political intrigue and flees with his younger sister, Ja-In. Resettling in a remote village under the care of a family friend, they try to live quietly away from turmoil. Years later, on the morning of Ja-In's wedding, Nam-Yi's peaceful life is shattered when a ruthless Manchu army attacks their village, capturing the young bride-to-be and slaughtering many villagers. Bent on rescuing his sister, Nam-Yi arms himself with his bow and sets off to face an army equipped with firearms and elite soldiers skilled in martial arts.

On the journey, Nam-Yi confronts numerous dangers, relying on his superior agility, extensive knowledge of the terrain, and remarkable archery skills to evade and outsmart his pursuers. The pursuit escalates into a deadly game of cat and mouse, where Nam-Yi uses the landscape to his advantage, setting traps and employing guerrilla tactics against overwhelming odds. As he narrows the distance to the enemy camp, tensions rise, showcasing his unwavering courage and determination to save Ja-In from the ruthless Manchu forces while uncovering unexpected alliances and challenges along the way.