A Secret Service agent wakes in a remote small town after an accident with no memory of how he got there and soon discovers that the place is unnervingly surveilled and tightly controlled; as he searches for missing federal colleagues and tries to escape, he peels back layers of secrecy that reveal the town is a sealed refuge created after society’s collapse, governed by a ruthless leader determined to protect its inhabitants at any cost from the dangerous, evolved threats beyond its fences, forcing him to decide how far he will go to survive and what freedoms he is willing to surrender for safety.