A Soviet tank and its warring crew become separated from their patrol and lost in an Afghan valley with a group of vengeance-seeking rebels on their tracks.
In a future where the polar ice-caps have melted and Earth is almost entirely submerged, a mutated mariner fights starvation and outlaw "smokers," and reluctantly helps a woman and a young girl try to find dry land.
Five college buddies from the University of Texas circa 1971 embark on a final road trip odyssey across the Mexican border before facing up to uncertain futures, in Vietnam and otherwise.