A coming-of-age story about the lives of two teenage boys set in Beijing during the 1960s.

Korean War, winter 1950. In the frozen and snowy area of Changjin Lake, a bloody battle is about to begin between the elite troops of the United States and China.

Commander Wu Qianli leads the 7th Infantry Company soldiers to Funchilin Pass where they are tasked to destroy a bridge to stop enemy troops from retreating.

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.