Californian hip-hop duo Silibil n' Brains were going to be massive. No one knew the pair were really Scottish, with fake American accents and made up identities. When their promising Scottish rap act was branded 'the rapping Proclaimers', friends Billy and Gavin reinvented themselves as LA homeboys. The lie was their golden ticket to a dream life. With confessions from the scammers, insight from the music execs they duped and doodle reconstructions, this film charts the rollercoaster story of the highs of the scam and the lows of madness and the personal toll the deception took. A film about truth, lies and the legacy of faking everything in the desperate pursuit of fame. The Great Hip Hop Hoax is a Glimmer Films and Met Film Production co-production with BBC Scotland, BBC Storyville and Creative Scotland.