During the Jinghe period, the Daqi Dynasty was prosperous on the surface, but in fact there were turbulent undercurrents. Su Qingyuan, the legitimate daughter of the Su family in Jiangnan, sneaked into Chang'an as an accountant because her father was wronged; Xiao Che, the concubine of the Duke of Zhenguo, pretended to be indifferent, but was actually the emperor's secret guard. The two met because of an assassination. From temptation to joining hands, they were involved in the whirlpool of the prince's succession and the restoration of the previous dynasty.
However, amid the party struggle, the mystery of the Jade Seal led to the dormant cult "Demon Fire Sect", and murders spanning decades and a shocking conspiracy that could burn the city gradually emerged. Combining the two attires and fighting in the deep palace, they must find a chance to survive in the crisis that surrounds them, prevent the flames of the cult from engulfing the imperial capital, and fight for a glimmer of light amidst the roaring wind.
