Riotous, hilarious and full of delightfully bad behaviour. In a society recently plagued by sink holes and the trolls that are causing them, the divide between changelings and civilisation seems ever wider. Sixteen year old Maurice is of the firm belief that anti-social behaviour is not really a sign of youth culture, it is the mark of a troll - a troll swapped at birth for a human child. A school excursion to The Dregs - a sinkhole estate where Changelings are sent if they are discovered - is not Maurice's idea of fun. Neither is the hijacking of of the school bus by a gang of riotous trolls. Being kidnapped by said trolls, just about puts the icing on the cake. But salvation comes in the unlikely form of Wretch, a teenage troll with a heart of gold but a head for destruction. He's a total pyromaniac, and he drives Maurice up the wall, but, together with sympathetic social worker Candy Lau, the two must work together if they want to get out of The Dregs alive, reunite Wretch with his parents, and perhaps even shake up the system while they're at it.