Single mother Wu Tong with his son Wu Tongtong in the big city life, the days while the poor, but filled with hope and happiness. An accident, caused Li Zhongmou attention, several verification, confirmed that Wu Tongtong was his own son. Li Zhongmou in order to return to the son, and Wu Tong check evidence of both parties at court, and to gain custody of her son. But in the process along, Li Zhongmou was struck by the close relationship between Wu Tong and the son of his own childhood, lack of motherly love, let him do not want a repeat of the son. Li Zhongmou and Wu Tong got married. After death, resentment, blame, prejudice, all people have learned tolerance, understanding, trust and love. In Maria Tung's primary school opening ceremony, one family reunion.