The film tells the story of a kind and honest fool, Mr. Zhu (Sun Bo), a primary school teacher, who has been working hard and hoping to be respected, but has suffered setbacks and frustrations one after another. There are two naughty students in Mr. Zhu's class who have been deliberately or unintentionally against him, but when Mr. Zhu decides to give up his teaching career, the two children suddenly realize his value and try to retain their teacher in a touching way. The film tells the story of two "naive" children and a "mature" adult, expressing the director's thinking on the value and meaning of life.