Bei Miao Kindergarten is about to hold a theatrical performance, but Xiaoyu, the leading actor of the fairy tale drama "High Jump" in the senior class, is hospitalized due to an accident. The teacher has to replace him. Xiaozi's five good friends. Xinyue, Xixi, Yiyi, Shitou, and Luo Rui missed Xiaozi very much when they were rehearsing at school. When they learned that the teacher was about to replace Xiaoyu, they decided to sneak out of school and embark on the journey to find Xiaoyu. What difficulties did the children encounter along the way? How did they overcome everything on their own? In the end, can the children successfully reach the hospital to find Xiaoyu? How should the teachers face the children's parents? Can they find the children who sneaked out of the campus? What kind of response will the children's innocence and kindness cause in society?