During the Tang Dynasty, Li Longji (played by Ma Junwei) and his aunt Princess Taiping (played by Chan Wai) launched a coup, executed Empress Wei (played by Michelle Yim), who had eroded the power of the throne, and supported Prince Li Dan to return to the throne. The Taiji Palace seemed to have returned to peace, but in fact, there was an undercurrent... In the court, the situation changed, and Li Longji and Princess Taiping split into two camps, and they were at loggerheads. In the palace, the concubines wrestled, and Wang Zhen (played by Nancy Wu) and Cheng Chunxi (played by Chrissie Chau) each fought for their own interests. Some people gave up their consciences for power, and some people gave up everything for their loved ones. The Dragon Army Ren Sanshu (played by Ma Guoming) and He Li (played by Xiao Zhengnan), the female historian Yuan Yue (played by Liu Xinyou) and Gan Ruoqian (played by Huang Xinying), used their true feelings and true nature to add a touch of romance to the deep palace... The deep palace is full of unsolved cases. After peeling away the layers of mystery, shocking secrets that have been hidden for many years are revealed; at the top of Tai Chi, amidst the treacherous circumstances and hidden behind the high walls, heart-wrenching scenes of love, hatred and vengeance are played out!