Lin Xiayang, his best friend Zhou Nan, squad leader Song Yue'an, literary club president Chen Sikui, basketball boy Gao Zibo and mysterious transfer student Ding Zihan formed a veritable "Hahaha Adventure Group" and were involved in various disturbances on campus: competition, literature and art, sports, love and family. Multiple story lines are intertwined and advanced, involving friendship tests, family pain, youth rebellion, budding love, dream pursuit, etc. Each of the six people had their own difficulties, but they also influenced and supported each other. They grew up and matured in the humorous and ups and downs of daily and extraordinary life. Until they graduated from high school, all the difficulties were resolved or accepted. The teenagers went their separate ways, but the laughter and tears along the way became the irreplaceable background of youth.