After Su Wan marries Lin Zhe, Lin Yu, Lin Zhe’s young son from his previous marriage, turns up soaked to the skin on Mid-Autumn night. Timidly, he asks, “Auntie, can I stay for two days?” Though heavily pregnant, Su Wan pulls him inside gently and tells him, “This is your father’s home. You may stay as long as you want.”
She quickly notices how gaunt he is and that his clothes do not fit. She soon learns that after his birth mother Song Li remarried, she let her new husband Zhang Hao mistreat Lin Yu severely. The boy only gets fifty yuan every week and rarely has enough to eat. Su Wan persuades Lin Zhe to cut the monthly child support from three thousand to fifteen hundred yuan. The saved money is spent directly on Lin Yu, and he comes to stay with them during every school holiday.
During National Day, Lin Yu is slapped and driven out by Zhang Hao. Despite her pregnancy, Su Wan takes the boy straight to Zhang Hao’s workplace to demand justice. Song Li storms into the office, screaming and claiming she is the wife of a wealthy tycoon. Su Wan then reveals she is the daughter of Su Yuanshan, chairman of Star Glory Group. Zhang Hao, who used to be Su Yuanshan’s driver, drops to his knees in terror.
The stress causes Su Wan to fall and give premature birth to her daughter Yaoyao. Once discharged, she hires a lawyer to fight for Lin Yu’s custody. In court, Song Li threatens to withdraw only if Lin Yu abandons the case, waving his admission letter to a top high school. But Lin Yu speaks up in open court: “I want to live with Dad and Auntie Su Wan, because they ask if I hurt.”
Custody is transferred. Later Song Li asks whether Lin Yu will care for her when she grows old. He replies calmly, “I will treat you the way you treated me.” Su Wan never lets Lin Yu feel like a burden. She celebrates his birthdays, attends parent-teacher meetings, fries “100-shaped” fried eggs for his college entrance exam, and drives six hours to bring hot pot to him when his business fails.
Twenty years later, Lin Yu builds a successful career. He buys a grand villa and puts it under Su Wan’s name. He tells her he would have jumped off the bridge if she had not taken him in that night. Song Li and Zhang Hao come to harass them and get taken away by police. Zhang Hao’s lawsuit demanding spousal support is dismissed. Su Wan tells Yaoyao that love should never be given in expectation of repayment. Kindness offered gently will always bring its own sweet fruit.