Cirque du Freak: The Vampire's Assistant tells the frightening tale of a boy who unknowingly breaks a 200-year-old truce between two warring factions of vampires. Pulled into a fantastic life of misunderstood sideshow freaks and grotesque creatures of the night, one teen will vanish from the safety of a boring existence and fulfil his destiny in a place drawn from nightmares. 14-year-old Darren (Chris Kelly) was like most kids in his suburban neighbourhood. He hung out with his best friend, got decent grades and usually stayed out of trouble. But when he and his buddy stumble upon a travelling freak show, things begin to change inside Darren. That's the exact moment when a vampire named Larten Crepsley (John C Reilly) turns him into something, well, bloodthirsty.