A family lives on an isolated farm. The wife is called Silver. Farm security is a tire barrier combined with thorn bushes. There are tunnels(2?) in and out. A bunch of semis invade and take over the local town in the middle of the night. They find an airplane to assist them in defeating the invaders. The husband buys buckets of silver coins right before the bottom falls out, with which he buys the land across from the farm.
