Moraine Baxter is a retired Delta Force operator working at Lawrence Livermore Laboratory. Her new job is boring and confined, the way she likes it. But a devastating earthquake halves the Labs. Two experiments code-named Combat Canines escape. And Moraine pursues the fleeing weapons across a shattered landscape. With time waning, she discovers her targets are more dangerous than first thought, throwing her into the most harrowing challenge of her life.