Nobody remembers the Opposite Day massacre at the Big Top amusement park...Nobody EVER remembers the massacre because nobody ever SURVIVES it...Harper thinks she is having a bad day. Having lost a great job, her home, and her girlfriend, she now works at the Big Top amusement park, entertaining guests... if "entertaining" means being sexually assaulted by the drugged up perverts who invade the park at twilight. But Harper doesn't know what a bad day is, not yet... because Harper doesn't know that today is the anniversary of the worst massacre in human history... today is Opposite Day, when fun becomes terror, laughter becomes screaming, and the whole world is turned upside down in an orgy of skull-fucking, stomach-bursting, genital-grinding ultra-violence.