Chen Mo was separated from her family at the age of three. Twenty years later, she returned to her home country in search of her relatives. Her father, Lin Yuan, wanted to give her mother, Zhao Huiru, a surprise and planned a reunion after twenty years of separation at Zhao Huiru's birthday party. However, due to some photos and notes on her father's phone, Zhao Huiru mistook her daughter for a mistress and bullied Chen Mo at the prepared birthday party. It wasn't until the end that Zhao Huiru realized she had wronged her own biological daughter, and she felt deep regret.