Four months after the government's attempts at exterminating the survivors, Adam and Wylie use the escape tunnel. Meanwhile, Chuck learns about Harrison's black market and tries to use it to escape the town, while Gord's food supply is stolen.
Between is the story of a town under siege from a mysterious disease that has wiped out everybody except those 21 years old and under.
Wiley Day lives in Pretty Lake, and is pregnant when her father ishuged by the plague. Now she must cope with her coming delivery as well as try to keep the young survivors from panicking.