Through the introduction of his friend Danma Ryuji, Onizuka Eikichi, the former legendary bike gang member, visits Meishu Academy to tend to the trees in the garden as a part-time gardener. Learning that Yoshikawa Noboru, a student in teacher Fuyutsuki Azusa’s class, is being bullied by Uehara Kyoko and other classmates, Onizuka befriends and saves Yoshikawa. Seeing Onizuka’s unprecedented but visceral, powerful response to problem-solving, the school’s president and principal, Sakurai Yoshiko, overrides resistance from her vice principal Uchiyamada Hiroshi and makes Onizuka a teacher. Onizuka goes on to tackle many issues as the teacher in charge of the most problematic class, Class 2/4.