At the beginning of the unification of China and the unification of China, Qin unified the six kingdoms. There were undercurrents of the remaining nobles of the old kingdoms inside, and aliens were invading the borders. The First Emperor Yingzheng sent the Longying Legion, the most elite division of the empire, to the Great Wall to resist the foreigners, and the Meng family unknown to the world. Led by Meng Long, the son of the prophecy, the First Emperor was obsessed with seeking immortality in the later period of his rule. The remaining nobles from the six countries began to accumulate strength. In order to ensure the stability of the Chaotang, the First Emperor established a film department, which was created by Li Si and taken over by his adopted son Li Tianchun. After the death of the First Emperor, the Qin Empire is in danger. How can the Dragon Roar Legion guarding the border and the Film Division lurking in the darkness stabilize the situation of the empire and consolidate the fruits of China's unity?