In the turbulent 1920s, the whole world was shrouded in a huge storm. In the capital city, where the situation suddenly changed, forces from various countries collided and competed, and the crisis was imminent. Lee Jung-chu (Song Kang-ho), a Japanese policeman of Korean origin, was highly regarded by the cunning Japanese police chief Higashimura (Tsurumi Shingo). During an operation to track down the Righteous Group, his former colleague Kim Jang-ok committed suicide, and then Lee Jung-chu became the vanguard in finding the leader of the Righteous Group. Through careful investigation, Lee found the antique shop run by Kim Woo-jin (Gong Yoo), who was a cadre of the Righteous Group. Recently, the Righteous Group planned to transport a batch of explosives from Shanghai to the capital by train, planning to blow up the Japanese police station. Kim Woo-jin boldly introduced Lee Jung-chu to Zheng Caishan (Lee Byung-hun), the leader of the Righteous Group, hoping to incite this Korean to help them complete their plan. In any case, Li Zhengchu, who still has a conscience, is tied to a small boat full of dangers, and he has to make a choice... This film won the Best Work Award at the 36th Korean Film Critics Awards.