In the vortex of power in Qingxi Kingdom, the eldest princess Nan Shuyao is frightened by her ruthless methods and superb poison skills. Because her mother was betrayed by her best friend and was poisoned by a strange poison, she and her sister Nan Ruoqi have been haunted by this fatal poison since they were born, and are destined not to survive beyond their thirties. In order to extradite the poison in her sister's body, she sneaked into the neighboring country Chili alone to find the medicine, and vowed to avenge her mother. However, during an assassination, she accidentally rescued the regent Xiao Junmo who was wearing a mask. Under the mask, he fell in love with her at first sight.
Later, she pretended to be a doctor and approached Gu Ange, the daughter of her enemy, but Xiao Junmo discovered the conspiracy. She planted the love poison into his heart: "I want you to be my knife willingly."
But when she killed her enemy and returned home with a load of medicinal materials, the gears of fate turned again - Xiao Junmo, who was seriously injured and had amnesia, was rescued by her sister Nan Ruoqi.
"From today on, you will be the face of this palace." Nan Shuyao raised his chin and smiled lightly, but she gradually fell into his increasingly affectionate eyes.
When faced with a choice, she aimed the arrow at his heart with her own hands: "You have never been my choice. Xiaoqi is my only choice."
Three months later, Nan Shuyao, who was running out of time, stepped into Chili again to complete his revenge, but he met Xiao Jun, who had regained power. Even though he was full of resentment, he still refused to hurt her in the slightest.
Later, when the time-traveling woman took over her body and tried to warm him, the resolute regent's eyes turned red: "Get out... The only one I want is her... Even if you occupy her body, you can't replace her!"
