Filth is Witch Sludgegooey's Fiend, Arthur the Dragon is precise, meticulous and lives with his mum, and O'Brian is a Leprechaun who is often mistaken for a Pixie. These three very different characters have two things in common - the band they play in (The Witchway Rhythm Boys) and the music they play (Crash 'n' Bang). But they don't get a chance to play Crash 'n' Bang a lot as nobody likes it very much. Until, that is, The Thing in the Moonmad T-shirt becomes their manager and sets their sights higher - on the forthcoming music competition The Battle of the Bands, where they face stiff opposition from some terrifying Skeletons, Trolls and Gnomes.

The narrative is set in Witchway Wood and features welcome appearances for Pongwiffy fans of characters such as Scott Sinister, Ali Pali, Lulu Lamarre and Witch Sludgegooey, as well as the Witchway Rhythm Boys themselves.

With appearances from a Fairy set on revenge, a Werewolf determined to join a band, and a loyal but not very talkative goldfish called Gareth, plus a lot of extremely loud Crash 'n' Bang, this is a fast-talking, drumstick-rolling, high-octane magical extravaganza!