On the orders of her adoptive father, Xie Yao offers poisoned wine to Xiao Jue, the Regent King of Xuanshuo, but he sees through her identity, uncovering a fake antidote and an old massacre case. She takes advantage of the situation to break free from the Xie family's control and investigate her origins, forcing her adoptive father to confess publicly and lose his power. Facing deadly political schemes at court and a conspiracy involving medicinal ingredients, she and Xiao Jue go from testing each other to falling in love, only to develop a rift over a market shutdown, food shortages, and a concealed promise. She refuses to trade a marriage promise for a chance to survive, nor does she use her victimhood to erase past crimes. Once the wrongful case is settled and power is brought under the rule of law, the two can finally choose the rest of their lives by their own names.