Snow Leopard Secret War is set in 1943, when the war in the pacific was still going on, causing the Japanese army to be affected and had to switch to defense mode. However, they were carrying out another battle plan, a large-scale attack began, they also tasked agents with lying in the area and illegally transporting weapons. . At this time, the leader of the Independent Troupe Tiger Tou Son Bat Lo Luu Vien found the spies and successfully prevented an impending war.