Four years ago, the entire family of sixteen-year-old Casey and her friend die in a car accident caused by a drunk driver. While waiting for rescuers, a girl trapped in a crumpled car could only watch her loved ones die before her eyes.

Fleeing terrible memories, Casey moves to another city. She tries not to let anyone into her life, but still succumbs to the charm of her housemate Trent. It begins to seem to her that happiness has knocked on her door, until what her neighbor was hiding comes out, again knocking the ground out from under her feet.