The confusing figures of EM1, EM2 and EM3 are actually the division of classes in primary schools in Singapore. EM1 stands for the best in learning, EM2 for the middle, and EM3 for the bottom. The children were divided into different classes, marked as smart, moderate and stupid. This makes many children express their dissatisfaction. Among them, Guobin, Terry, Wen Fu, these three children from EM3 are the fiercest resistance. The three children are not only like-minded, but their parents also have connections of one kind or another, but none of them are very friendly. When the three stupid children were helpless and at a loss, a new teacher came to the class. Her encouragement made the children realize that they were not inferior to others. The achievements of Wen Fu and others have improved. On the other hand, the families of three children also saw the truth because of their adversity. Everything is developing in a good direction.