No earlier has 15-year-old Lee Keegan been removed from his independent school than an apocalyptic event erases a lot of the world's population. With his father dead and mother trapped abroad, Lee is offered one instruction: go back to institution. But security and security at St. Mark's Institution for Boys remains in short supply. Its high walls can not stop the local church council from creating a militia and also imposing marshal regulation, while inside the dorms completion of the globe is having a dangerous effect on his buddy and his unrequited crush on the school nurse isn't aiding him focus on staying alive.