A deadly virus has wiped out three quarters of the world's population. Medical research scientist Dr. Jary Coble had sought — and failed — to combat the pandemic. Now holed up in his university-assigned safe haven, a mysterious figure appears in the dead of night and takes the dejected Coble to an apparently thriving city — a place somehow untouched by the virus. What Coble discovers here will change the way he sees the world, and turn his life upside down.