A scientist mommy battling beasties better be handy with a scalpel. Elise Swanson is trying to give her daughters a decent childhood. This should be a simple task, but the invading undergrounders - subterranean humanoids that have existed since the dawn of mankind - make outdoor playtime a tad tricky. After fleeing Georgia and surviving six months of bumbling self-sufficiency, Elise and her daughters meet Jason. He's tough and nature-savvy. Pit stop fights with beasties define the survival-road that the four companions navigate. The bloody pavement finally ends in Washington State at a government safe zone where the trekkers hope to build a stationary life. Fleeing her home, Elise had two loved ones to shelter. That number has risen. When the not-so-safe zone is invaded by beasties, she will save her family...no matter the consequences.