When a pilot suffers a heart attack at 35,000 feet, a commercial airliner filled with passengers crashes into a nuclear power plant in the small town of Waketa, Minnesota, which becomes ground zero for a catastrophic national crisis with global implications.

The International Nuclear Event Scale tracks nuclear disasters. It has seven levels. Level 7 is a Major Accident, with only two on record: Fukushima and Chernobyl. There has never been a Level 8. Until now.

In this heart-stopping thriller, ordinary people--power plant employees, firefighters, teachers, families, neighbors, and friends-- are thrust into an extraordinary situation as they face the ultimate test of their lives. It will take the combined courage, ingenuity, and determination of a brave few to save not only their community and loved ones, but the fate of humanity at large.