Set during the final phase of the War to Resist U.S. and Aid Korea, the film depicts the tense final battles and simultaneous peace negotiations leading to the armistice, capturing the spirit of perseverance and sacrifice on both the battlefield and the diplomatic front.

The story is based on real documented evidence of the atrocities committed by the Japanese army during the Nanjing Massacre. A group of civilians hiding in the Lucky Photo Studio to escape the violence are forced to assist a Japanese military photographer in developing film to survive each day. By chance, they develop photographic evidence that exposes the Japanese army's massacre in the city. Initially focused only on surviving the horrors, they ultimately decide to preserve these damning negatives as proof of the atrocities unfolding in Nanjing...

The movie focuses on the battle of Cheolwon, where the 63rd Army of the Chinese People's Volunteer Army (CPVA) was ordered to enter the battlefield of Cheolwon in May 1951, just after a month-long battle, to fight against four divisions of the United Nations Army (UNA). The volunteers fought with bloodshed and finally brought the enemy to the negotiation table.

In the early days of the founding of the People's Republic of China in 1949, New China was faced with "internal and external troubles". Since the outbreak of the Korean Civil War, the U.S. military has repeatedly provoked the border between China and North Korea, and civilians have been brutally bombed. In order to maintain the hard-won peace and long-term stability for generations, in October 1950, the Chinese People's Volunteers entered North Korea, and the "Resist US Aid Korea" war kicked off.