When a mysterious comet blazes across Earth's sky, every pregnant woman on the planet dies except one. Annette survives. But what grows inside her isn't a miracle... it's a warning. As her husband Marty clings to reason and her sanity begins to fracture, something ancient and malevolent stirs awake. Now, the fate of humanity rests on a handful of terrified souls standing between light and an unstoppable darkness. Because once the child is born the end begins.