Jeff Bogard was a master of the Hakkyokuseiken martial arts school and the guardian of its secret techniques. Coveting this knowledge, Geese Howard, the most powerful man in South Town, challenged and murdered him in front of his adoptive sons Terry and Andy Bogard. Under the guidance of their mentor Tung Fe Rue, the brothers dedicate their lives to training in the ultimate art to avenge their father. 10 years later, Geese promotes a martial arts tournament known as the King of Fighters. Terry and Andy join their friend Muay Thai champion Joe Higashi and enter the competition in order to finally face Geese in combat. [Written by MAL Rewrite]

Kanto Hell Earthquake has demolished the metropolitan completely. After the earthquake, Slum King is kidnapping girls and sell them as sex slaves. Mari is wandering on the devastated field looking for her lover, Ken. But she is also kidnapped by them. While she is tortured and trained as a sex slave, Ken saves her. Ken has become the member of Slum King. The king offers condition to him; in return for releasing her, he has to kill Violence Jack. (Source: AniDB)

The World as we know it has been torn apart shattered by a series of natural disasters that have turned civilization into a brutish nightmare of survival and has left whole cities buried beneath the Earth. It's now a lethal and chaotic place, a place where only the strongest and most savage remain alive. The strongest of them all is a giant warrior known as Violence Jack… Violence Jack tries to avert a civil war brewing among the wretched inhabitants of a subterranean metropolis called Evil Town. Based on a character created by manga horror specialist, Go Nagai. (Source: AniDB)

The survivors of Kanto's Hell Earthquake built a new city and christened it "Hope Town". However, this peaceful town becomes a nightmare when it's raided by the motorcycle gang, "Hell's Wind". They abduct the women while the remaining townsfolk are left helpless against them. Meanwhile, a boy, Subaro, meets Jun. Jun's lover was previously murdered, and the duo help one another to fight against Hell's Wind. The battles are getting more and more difficult, but with the appearance of Violence Jack, the citizens seem to gain the upper hand against Hell's Wind. (Source: AniDB)