Future Justice plot
In the future, the world's greatest criminals will be held on Saturn's moon Titan while awaiting trial and execution. One of these criminals, Python Diamond, is flown back to Earth along with a five-man escort. Once there, it turns out that the earth has fallen victim to a nuclear war, which has turned the world into a lifeless plain. Python and his escort search for survivors and the cause of the disaster, leading them to a secret bunker full of scientists, whose work may be the world's only hope. However, Python's landing spaceship and his escort are spotted by a gang, leading the gang straight to the secret bunker. What follows is a fight to the death.