This film is based on the background of "Bing Zi random". Thirteen years ago, loyal minister Cui Pingliang was destroyed on the charge of "treason". His son and daughter Nanyi (Park Hai-ri) and Ciren (Wen Caiyuan) narrowly escaped, and Cui Pingliang fought to the death. With his father's bow and arrow and entrustment, Nanyi and his sister defected to his father's best friend Jin Wushan's family. Time flies, in 1636, Rui Jun, the son of Kim Wushan, proposed to Ciren. Nanyi, who was negative because of his father's encounter, felt that he was sensitive as a descendant of the Cui family, and wanted to refuse the marriage, but Ruijun was sincere and Jin Wushan. Cui and Kim tied the knot, but on the day of the wedding, Hou Kim invaded North Korea. Soon after, Renzu surrendered and became courtiers, and Rui Jun and Ciren were taken by Manchu troops. Nanyi, who had outstanding shooting skills, tracked down the road, waiting for an opportunity to save relatives, and Nanyi's haunting sniping and tracking also attracted the attention of Manchu archers and cavalry generals.