It tells the story of Xiao Jinmao gradually developing an interest in learning with the help of Guan Xiaozheng and becoming his follower. Guan Xiaozheng taught her learning methods, how to solve problems and review. Although Xiao Jinmao did not participate in Guan Xiaozheng's cycling activities, her previous accident made Guan Xiaozheng constantly worried about her safety. In the 'Cloud Sky Battlefield', Li Pingping's cycling skills attracted other teenagers, but also caused dissatisfaction from Little Stone's father because the sand raised by cycling affected other people in the park. Little Stone's father asked them to ride in a different place, but Li Ping refused, but ultimately left under Little Stone's father's intimidation. Guan Xiaozheng realized the potential danger of cycling and chose to withdraw.