LIU Yisi is a seven-year-old boy. His parents are divorced and he lives alone with his mother. One day, mother's boyfriend came to visit us. During dinner, his father called and said that he was going to work in another place. He hoped Yisi could live with him for a while, but Yisi refused. Lewis found out that his mother's boyfriend was spending the night. Lewis was upset and went to his father's house the next day. Yisi and his father gradually warm up, but was told by his mother that his father went to the other place has nothing to do with work, just because of a wealthy woman. Feeling his pride hurt, Yisi again treated his father coldly. After experiencing the cold war and running away from home, father and son slowly untangle their feelings, reconcile and say goodbye.