The quirky Wu Yan doesn't know how to practice medicine and can only practice medicine, but she is the successor of the Holy Medical Sect; the elegant Mo Wen can't do poison but can only practice medicine. Unfortunately, he is the leader of the Poison Medicine Sect. Two happy enemies with completely opposite personalities grew up together. She poisoned her and he detoxified. Mo Wen could always easily detoxify the poison developed by Wu Yan, just like Wu Yan could not escape from Mo Wen's grasp no matter how hard he tried. One day, Wu Yan got angry and asked Mo Wen: "What kind of poison can't you cure? How can I stay away from you?" Mo Wen helplessly said, "Isn't this clear? 'Wu Yan' is the poison that has no cure in the world. I will never allow unsolved poison to stay away from me." Don't say anything, don't ask, Wu Yan Mo Wen.