Xiao Zhenbei, the great general of Wuwei in Shazhou, has defended the city for three years. With his ammunition exhausted and food supplies depleted, he unexpectedly travels through a latrine to the resource-rich 21st century. Determined to make sure the people in his city have enough to eat and drink, Xiao Zhenbei begins working odd jobs. After earning money, he exchanges it for rice and advanced modern goods, then takes them back to ancient times. Leading his brothers to a better life, he fights back against the enemy army and thrives in both worlds.