In the eighteenth year of Shunzhi in the Qing Dynasty, smallpox spread in the palace, and Shunzhi's concubine Dong died. Shunzhi was so sad that he decided to become a monk. At this time, the Qing Empire was full of internal and external worries. In the critical moment, Empress Dowager Xiaozhuang (played by Siqin Gaowa) acted decisively and pushed the eight-year-old prince Xuanye, who had just recovered from smallpox, as the heir to the royal family, and Emperor Kangxi ascended the throne. After Kangxi (played by Chen Daoming) ascended the throne, Aobai, who held military power, forced him to rule the country temporarily for the sake of the overall situation. Aobai's ambition was not only to rule the country himself, but his ultimate goal was to plot a change of dynasty. The young Kangxi was very smart. He first relaxed Aobai's vigilance by playing with a group of teenagers all day long, and then invited Aobai to the palace and took the opportunity to put him under house arrest. Finally, a major hidden danger was eliminated for the emperor and the country was saved. Afterwards, Kangxi worked even harder to govern the country and took action against the Three Feudatories, which had been a long-standing problem, thus starting a period of Kangxi's reign of eliminating rebellion and maintaining domestic stability!