The Last

It's years after the war that destroyed most of the earth and there are only a few scattered towns and villages surviving.
Some prefer not to join with the rest, but to take their chances on their own after the war left them unable to trust the human race again.
A family of three live in a home they built themselves in the middle of nowhere, but they have no idea what's coming.

This is based off the same principle that The Electric Fence is centred around. It's set a lot later when the world is attempting to rebuild itself.