Su Heng, an antique restorer, signed a "yin and yang marriage contract" on behalf of his best friend. He accidentally tied a supernatural contract with Xie Yan, a returned lawyer, and was forced to move into Xie's old house. On the surface, it is a sweet cohabitation of a wealthy young lady, but in fact it hides the supernatural secrets of three generations of mother-in-law and daughter-in-law - the mother-in-law always says "the osmanthus tree in the yard is crying", and the sister-in-law Xie Qingtang frequently uses "the deceased's dreams" to instigate conflicts. Su Heng relies on his ancestral ability to see spirits, and in the process of solving the supernatural events in the old house, he gradually reveals Xie Yan's unconditional support for her under the mask of "a modest gentleman". The process of the two people going from "masked lovers" to sincere mutual understanding also involves an unsolved spiritual revenge case in a transnational marriage ten years ago...
