Pedaling her bicycle through the countryside, mile after mile, had been one of Sue's favorite ways to travel. Despite the shaky conditions in the world, she and a friend embark on a cross-country bicycle trip. She's nearly two thousand miles from home when an EMP (Electro-magnetic pulse) over the eastern third of the nation takes out the power grid and cripples transportation. She must get home! Her husband, kids, and grandkids are back at their homestead...