Onizuka Eikichi, a famous member of the Onibaku gang, arrives in Tokyo with his former classmate Ryūji in search of a better life. Calm and prudent Ryuuji opens his own car service, and Onizuka decides to get a teacher at school. The obstacle to the teacher’s happy life is the ignorance of Aikichi and his generally disregard for his own subject. Naturally, he has nothing to catch in a public school - he has no chance of passing an exam for professional suitability - therefore the only way to Onizuku's teacher lies through private lyceums. After much hassles and misadventures, he finally manages to enter the Lyceum “Seirin” (book. “Holy Forest”), where he immediately gets into a conflict with the deputy director and becomes the class teacher of the most problematic class in the school. Students instantly declare war on a new teacher, but Onizuki’s sincerity and simplicity allow him to gradually gain the respect of both students and their parents, as well as the teaching staff. All attempts to drive Onizuku out of school due to his professional incompetence, they end in failure due to the immediacy, simplicity and pedagogical talent of the young teacher. He compensates for the wind in his head with sincere enthusiasm and perseverance.