Chen Wang, a modern special forces instructor, traveled through time and became a captain who was demoted to the Western Regions. He only had 300 old and weak soldiers under his command. Opposite him was Beidi, a hundred thousand horsemen riding on the oasis. He used modern tactics to dig traps, build beacons, and instigate tribes to rebel, and achieved three incredible victories in desperate situations. After his deputy Su Chixin blocked the arrow for him, the eunuch Zhao Wuji presented the mine map to cast the arrow, and the princess Murong Yao secretly delivered the secret report of the grain route, but each step hid her own agenda. When Chen Wang led his remnant soldiers to light up the smoke at the foot of Langjuxu Mountain, he found that he had already been involved in a shocking chess game that spanned the Western Regions and the imperial court.