High school dropout Hayato gets locked up in juvenile prison, where his usual stuck up attitude puts him in trouble with the other delinquents. This installment marks the return of undefeated Yanki (Japanese delinquent) boss, Monji Mori, who becomes Hayato’s nemesis.

Takumi is a sexually frustrated high school freshman Yanki (Japanese delinquent) with an unrivaled iron fist. Along with his group of loyal friends, they plan to take over all Japanese high schools to be the top Yanki, but Takumi's first love deters him from this goal...