Alone Together (2009)

'Alone, Together' is the story of two girls: Kate, a cheerleader and all-around good girl, and Sandra, Kate's brother's girlfriend and stuck-up bully. They are polar opposites and natural enemies. Early in the film a bizarre miracle removes all human beings from the planet except for them. Ordinary life quickly becomes a struggle to survive, the hardest part of it all being how to get along with each other.