I think my head is Darkness

War has broken out all across the world, and for the hapless residents of a small American town, they don't have a clue what's going on. Bombs are raining down everyday, their town is sealed off, communications aren't working, and all they can wait for is a confusing and merciless death. Until one day, two strangers arrive on a motorbike, offering a chance not only for escape, but for salvation. Twenty year old Rachel, however, has other problems to worry about. You see, she doesn't think she's right in the head. Sometimes she thinks there's another person living inside of her. Sometimes she thinks she's insane. She thinks her head is darkness.