As the final volume in the series opens, Maddy, Dane, and Stamp are still together, though barely, nestled safely inside the walls of Sentinel City, a stronghold designed to keep Zerkers out--and zombies in. Maddy trains night and day, hoping to join Vera as a Keeper. Dane has been given Sentinel Support in the form a busty blonde named Courtney. And what of Stamp? Although Maddy's dad has worked hard to rehabilitate him after his Zerker bite, he's still not all . . . there.