Su Xiuqin, who has been widowed for many years, has an unwanted affection for her eldest son-in-law Chen Feng, and unexpectedly becomes pregnant with a boy after having a relationship with him. It happened that her youngest daughter Su Lin gave birth to a baby boy at the same time. In order to cover up the scandal, Su Xiuqin secretly exchanged her son with Su Lin's son in the name of taking care of her confinement, and sent her grandson to the countryside, leaving her biological son to stay with her youngest daughter to raise. Five years later, the blood type report during the child's physical examination exposed this carefully planned lie. The youngest daughter and her husband were suspicious of each other because of the inconsistent blood type. The results of the paternity test completely collapsed the entire family relationship. The dust-laden secrets were revealed, involving a deformed relationship and an irreparable family tragedy.
