The story takes place in Yandu (Zigong) in the 1980s. Gao Lanying, an ordinary and simple mother, took her son Daman to Yu Mancang's home, where Mancang's two daughters and Mancang's mother.Yu Mancang, who is irritable, died in a car accident, leaving behind a tricky and weird old lady, Daman who is never satisfied with the status quo, Erman who is dissatisfied with the slutty Erman, Sanman who is well-behaved and sensible, and the sudden appearance of the illegitimate son "Xiaoman".After Daman was released from prison, his career gradually reached its peak, and he was framed and fell to a trough; Erman's teacher-student relationship killed the teacher; Sanman, who had always been well-behaved, was expelled from the school because of his pregnancy when he was about to graduate from college.Gao Lanying faced sudden blows again and again, and took on the burden of the family with strength. Her tenacity and kindness warmed every child and the people around her, making them find their own happy lives. She interpreted a hymn of a great mother with ordinary.