The story takes place in the 1930s, when the iron hoofs of Japanese imperialism resounded throughout East Asian countries. In the turbulent times, legends were staged one after another. In China, Lian Xizhen (Lee Jung-jae), the captain of the Bureau of Affairs, who served in the Provisional Government of South Korea, released the sentenced to death independent army sniper An Woyun (Jun Ji-hyun) from prison, and then found the blasting expert Huang Desan (Choi Dewen) and the "rapid-fire gun" Qiu Shangwo (Cho Jin-woong), a graduate of the New Military Academy, and ordered the three to assassinate the commander of the North Korean garrison and the traitors of their own country. The dangerous action began, but the Japanese side soon received the assassination mission. In the crazy snake dance of the ten-mile foreign field, the tense and exciting contests full of conspiracy unfolded alternately, and this was also a thrilling duel about the fate of the nation... The film won the Best Film Award at the 36th Korean Blue Dragon Awards in 2015.