The heroine Shen Ruowei, who comes from a medical family but is in trouble, is forced to marry into the Duke of Ningguo's palace to save her seriously ill younger brother, and to "bring joy" to the eldest son Gu Jun who is rumored to be lingering on the sickbed and dying soon.
Everyone thought that this country female doctor would become a burial object and bullied her in every possible way. The vicious stepmother, the white lotus step sister, the unruly sister-in-law, and the mean servants, the entire Duke's mansion is like a dragon's pool and a tiger's den.
However, Shen Ruowei is not a soft persimmon who can be manipulated by others. She looks weak and pitiful, but in fact she is eloquent and thoughtful. She uses "green tea" as her armor and her "venomous tongue" as her blade, and she uses her skills to show off her tricks in the back house. While using her superb medical skills to gain a life for herself, she secretly investigated the truth behind her husband's "serious illness"; while dealing with various forces, she stepped on those who bullied her one by one and took back everything that belonged to her.
While getting along with Gu Jun, she discovered that this seemingly weak man actually had a lot of troubles in his heart, and he had been enduring humiliation and plotting secretly. From allies who tested each other, the two gradually became confidants and lovers who trusted each other's backs. They jointly dealt with the conspiracy in the inner house and the treacherous events in the court, and finally uncovered a shocking conspiracy and took control of the world.
