When the sudden appearance of lights from the sky causes his girlfriend to disappear, Alex and his friends embark on a quest to find her. Their journey soon leads them to a deep underground military base where they encounter government agents and an alien menace that threatens their lives.

Completely on her own, Sarah spends her time at home, waiting for the approaching birth of her child. But one night, a stranger breaks into her home, ready to snatch her still unborn baby from her.