Darren Mullet (Calvin Dean) is overweight, uses an inhaler and is constantly bullied by his spoiled classmates. His suicide prompts Bradley (Alex Pettyfer), Darren's main tormentor, to host a wild party, where Justine (Tuppence Middleton) hooks up with Alexis (Dimitri Leonidas). When Bradley and Alexis's friends start turning up dead, everyone starts to panic.