Cheng Shiyuan was originally the third young lady of the Prime Minister's Mansion, but when she was eight years old, she was framed and kicked out of the house by her father.
By chance, she became a disciple of a traveling doctor and humbly sought advice on medical skills. Eventually she mastered the miraculous method of using poison to make poison, and from then on she was called the "ghost doctor" by people in the world.
She originally wanted to live in seclusion in the mountains and concentrate on studying medicine. But because of his reputation, he was remembered by the killer.
The killer found her residence and wanted to kill her. At the critical moment, she met His Highness Prince Lan, Mo Chenyan, who came to seek medical treatment. Under her rhetoric, Mo Chenyan chose to come to the rescue.
From this moment on, the fate of the two is intertwined.
Cheng Shiyuan: I'm sorry, Your Highness, I've caused you trouble again!
Mo Chenyan: No problem! I am your supporter, do whatever you want!
Cheng Shiyuan: There are so many of them, I'm afraid it's hard for you to defeat them with just two fists! You go quickly!
Mo Chenyan: Don't worry! To deal with them, one slap for each of me is enough!
