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.