King Zhuangxiang of Qin, Ying Yiren, has died, and thirteen-year-old Ying Zheng has just ascended the throne of Qin. Lü Buwei controls the government, Lao Ai abuses his favor to meddle in state affairs, and Queen Dowager Zhao Ji listens to slander. This is the most isolated period of Ying Zheng’s life: he is the King of Qin, yet has no trusted ally to rely on. Then a transmigrator arrives, using knowledge from more than two thousand years in the future to outclass the elites of the Warring States period. Every crisis that should have brought the kingdom to ruin becomes a legendary moment in which Ying Zheng and his new ally turn the tables and crush their enemies.