Fourteen miles east of Peachtree, Alabama, a secret is hidden. That secret's name is Annabel Lee Truckson, and even she doesn't know why her mysterious uncle has stowed her deep underground in a military-style bunker. He's left her with a few German words, a barely-controlled guard dog, and a single command: "Don't open that door for anybody, you got it? Not even me."

Above ground, a former Army sniper called The Mute and an enigmatic "Dr. Smith" know about the girl. As the race begins to find her, the tension builds. Who wants to set her free? Why does the other want to keep her captive...