Kaiko City is plagued with poverty and crime. When a corrupt businessman decides to run for mayor and starts eliminating opponents from the rival mafia, a former police captain serving time for murder is secretly released and put in charge of a special task force to arrest him.

The street fighters of Oya High go up against the delinquent brawlers of Housen Academy in this action-packed “High & Low,” “Crows” and "Worst" crossover.