Six years after the apocalypse, George and his daughter live at a secluded old farm in an attempt to hide from roving creatures, militant survivors, and their own past. But a stranger's unexpected appearance brings them out of hiding.

In 1979, Jake Richardson’s twin brother was the last victim in a 35-year string of child murders. Now, the dead children’s spirits haunt Jake, leading him to the site of a long-abandoned amusement park to solve the mystery of the killer’s identity.