Sophies 18th birthday party becomes a bloodbath when six terrifying monsters descend upon her house, intent on devouring the party guests and killing anyone who tries to leave. As her school friends are torn apart and eaten, Sophie must rally a band of misfits and take up arms to send their party crashers back to hell. To survive the night, Sophie will face her destiny; monsters are real - and shes the only one who can stop them.