As Wang Zhenwei (played by Zhou Qunda) and Shen Feiyan (played by Wu Xiaomin) prepare for their wedding, the Tianxia Escort Agency receives a secret imperial edict to escort the divine cannon to the Korean border, to assist the Korean nation in resisting attacks from the Japanese. Thus, Wang Zhenwei, following his father Wang Zhaoxing (played by Jiang David), along with Shen Feiyang and Li Yuncong (played by Zhang Zhiyao), embark on a journey to protect their homeland from invaders. However, the group encounters not the divine cannon but instead a battlefield filled with the corpses of soldiers and a crazed military leader, Dou Tiande (played by Lian Jin), who is in a state of shock. What kind of tragedy has unfolded here? To make matters worse, the enemy has surrounded the village where Wang Zhenwei and the others are located, which indicates that the divine cannon is still hidden within the village. As the Tianxia Escort Agency defends against enemy attacks, they simultaneously begin a thorough search of the village.