Newcomer Xu Xinglan unexpectedly travels back to ancient times and becomes intertwined with her assassination target, Yuwen Yan, the second young master of Anjin City. Their relationship ignites a thrilling cat-and-mouse game of love and rivalry. Harnessing her modern sensibilities, Xu Xinglan embarks on an extraordinary journey, evolving from the"first female assassin" to the"first female official" in Anjin City.