A cyborg, identical to the one who failed to kill Sarah Connor, must now protect her ten year old son, John Connor, from a more advanced cyborg.
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.
An android endeavors to become human as he gradually acquires emotions.