After the Ming Dynasty and the Oirat sealed a fragile peace treaty, unrest brews beneath the surface. Chen Guang, a Night Patrol captain, flees to the city gates under pursuit his mission: protect Suhantai Taiji, the key figure behind the treaty. He brings dire news: General Suhebalu of the Oirat has launched a sudden betrayal. Yet at the frontier outpost, Commander Zhao refuses to get involved in tribal conflict. With no reinforcements, Chen Guang is left with no choice but to lead a small unit Qiao Sanyi, Guo Song, Old Lei, and Zhang Shun on a perilous journey to Ningxia Prefecture, seeking support from higher command.
