 However soon after, his lab exploded and the scientist himself mysteriously disappeared.Now several years later there are new buildings on top of the forgotten slum where the experiments took place and suddenly a genetic virus has started to spread among the tenants turning them into vicious mutants.Two young fighters of the local city, Ricky Jones and Johnny Hart, return to town after having been away for a long time and upon seeing the chaos that's happening, they take it upon themselves to clean the town up before the mutants spread across the nation.