A man struggles with memories of his past, including a wife he cannot remember, in a nightmarish world with no sun and run by beings with telekinetic powers who seek the souls of humans.
Babe, fresh from his victory in the sheepherding contest, returns to Farmer Hoggett's farm, but after Farmer Hoggett is injured and unable to work, Babe has to go to the big city to save the farm.
Set in the nuclear war-torn world of 2040, a congested city is shrouded in a deadly smog, where breathable air is obtainable only through labyrinth shafts that transport the precious gas from high in the atmosphere. These passages are kept functioning by an elite 'Air Force'. The team risk annihilation to expose a deadly blackmail scheme.