The film tells the story of a veteran An Dashan, who works as teacher in a poverty-stricken mountainous village and devotes his love to the left-behind children. After retiring from military service, Dashan paid a visit to his relatives in his village where he saw the teachers quit their job and the students dropped out of school. Regardless of his fiancée’s opposition, he decided to be a primary teacher in countryside rather than working as a civil official in the downtown, In order to finance the children, he learned to plant mushrooms. One day, he fell off the cliff when he picked the wild mushrooms. He was rescued by the villagers. He gave all his love to his students and overcame all kinds of difficulties and help the children go back to school.