During the Tianbao period of the Tang Dynasty, the border soldiers stationed at Langya Pass had repeated battles with Liu Yishou and other gangsters. Unfortunately, Langya Pass fell into the hands of the enemy because we were outnumbered. The border soldiers such as Liao Da and Guo Gui were brave and fearless. They launched a life-and-death struggle with the bandits, regained the Langya Pass, and used their lives and blood to protect the smooth flow of the Silk Road...

반드시 랑아관을 사수하라! 당나라 현종 시기. 반란군으로부터 황제를 지키기 위해 북방 변경 수비대는 소수의 인원만 남기고 랑아관을 떠난다. 랑아관이 비었다는 사실을 알게 된 마적단은 그곳을 손에 넣을 계획을 세우고 수비대는 최후의 결전을 준비한다.