An android fighting-machine (Mario Van Peebles) is charged with destroying a small brigade of rebels in a Latin American war who are fighting to maintain their freedom and protect their village. Contrary to his programming, Peebles decides to stay and assist the rebels in their plight. Having gained this information, his "creators" develop a more powerful android to try and defeat him.
Prisoners are dumped on a sand planet dubbed Earth 21-523 where most are immediately killed by the sand people and the remainder struggle for existence. That is until a new prisoner arrives with ideas of providing irrigation of the desert. But he still must first fight the nomadic sand people.
During his 18 years in Folsom Prison, street-gang leader Santana rules over all the drug-and-murder activities behind bars. Upon his release, Santana goes back to his old neighborhood, intending to lead a peaceful, crime-free life. But his old gang buddies force him back into his old habits.
A father reminisces about his childhood when he and his younger brother moved to a new town with their mother, her new husband and their dog, Shane. When the younger brother is subjected to physical abuse at the hands of their brutal stepfather, Mike decides to convert their toy trolley, the "Radio Flyer", into a plane to fly him to safety.
