Mad Max Beyond Thunderdome (1985)

Bartertown is a city on the edge of a desert that has managed to retain some technology if no civilization. Max has his supplies stolen and must seek shelter there in a post apocalypse world where all machines have begun to break down and barbarians hold what is left. He becomes involved in a power struggle in this third Mad Max film where he must first survive the town, survive the desert and then rescue the innocent children he has discovered.