The story takes place in the middle school of Qingshi Lane, a small town in the south. Six teenagers and girls with distinctive personalities form the "Second Teaching Building Funny Group". They use their own methods to fight against study pressure, family troubles and youth distress in ordinary days. As the fourth graders enter high school and experience the college entrance examination storm, friendship ups and downs, and romantic undercurrents, they support each other, tease each other, and grow together through sweat, tears, and laughter. The whole book uses humorous and simple daily life as the main line, connecting ups and downs of major events. In the end, they each go to the world, but when they look back, they find that the most precious thing is the period of "youth that they loved with all their strength."
