A mysterious virus begins to kill off adults in the small town of Pretty Lake, and those left alive scramble to survive. Wiley Day is pregnant but she has a plan to give up the baby and leave Pretty Lake behind forever until the government implements... (more) a quarantine of a 10-mile radius around the town. Trapped inside, Wiley's best friend Adam, whose plans to attend MIT are dashed, knows their only hope of escape is to find the cause of the virus.