With international relations rapidly deteriorating, Candy's father, publicly a small-town pathologist but secretly a government biowarfare expert, is called to Washington. Candy remains at home.The following day a worldwide attack, featuring a bionuclear plague, wipes out virtually all of humanity (i.e., Homo sapiens). With her pet bird Terry, she survives the attack in the shelter beneath their house. Emerging three months later, she learns of her genetic heritage and sets off to search for others of her kind.

    

    A super-genius in a small underground colony of survivors of nuclear war, eighteen-year-old Casey risks journeying back to the twentieth century to discover why the survivors are dying and how he can save them all.