The story takes place in 1953, when the struggle between South Korea and North Korea was at its peak and the domestic situation was very tense. Nanfu (played by Xue Jingqiu) was an honest farmer who made a living from the land. Although his life was tight, he was also quiet and peaceful. The arrival of the war completely changed his fate. After being called up to the army, Nanfu, who knew nothing about how to fight, became a Korean soldier everywhere on the street. One day, his boss handed a very important confidential document to Nanfu and ordered him to send it to a designated location. This document was so important that it was related to the success or failure of the war. However, Nanfu lost the document, and the document was picked up by Rongguang (played by Lu Zhenjiu), a soldier of the Korean People's Army. Between the two, a cat-and-mouse game of hiding and finding began.