Following the catastrophic Kanto Hell Earthquake that razed the city, the ruthless Slum King seizes the opportunity to abduct girls for a deplorable trade. Amidst the ruins, Mari embarks on a desperate quest to find her beloved, Ken, only to fall prey to the same fate. Enduring torment and enslavement, Mari's salvation arrives in the form of Ken, now a pawn in the Slum King's game. To secure Mari's freedom, Ken must face a perilous ultimatum: eliminate the formidable adversary, Violence Jack.