1930- Japan's colonial rule of Korea, many Korean resistance activists are based in Manchuria, northeastern China while hiding from Japanese authorities.
1933- Orders are given to assassinate the commander of the Japanese troops in Korea and a pro-Japanese Korean business tycoon. Yeom Seok-jin, an agent of the provisional Korean government in exile in Shanghai, breaks out topnotch sniper Ahn Ok-yun from a prison where she's been sentenced to death, in order for her to lead the plot. Among her comrades are mysterious and ruthless gun-for-hire Hawaii Pistol and his right-hand man Pomade, as well as firearms specialist Soksapo. The squad arrives in Gyeongseong not knowing that one of them is secretly working for the Japanese and was given his own orders to kill a member of the team.