As the eldest daughter of the Xu family, Xu Yu was abused by her stepmother Zhang after the death of her biological mother. Her father, Xu Mingde, turned a blind eye to her daughter's situation. Xu Yu could only find solace in the courtyard in front of the plum tree planted by her mother during her lifetime.
Lin Fengzhi, the powerful young prime minister, suddenly proposes marriage. On the surface, he wants to repay Xu Yu's biological mother for giving him porridge, but in fact, he wants to cover up his secret of disguised as a man. The two of them enter the marriage with their own concerns.
After marriage, Xu Yu lived a noble but lonely life in the Prime Minister's Mansion. He maintained an estranged relationship with Lin Fengzhi and gradually opened his heart through the exchange of notes under the peach tree.
Xu Yu accidentally discovered that Lin Fengzhi was actually a woman. After being shocked, he understood the true meaning of this marriage. The relationship between the two changed qualitatively, from a fake couple to a true confidant.
