Stuart and Sarah Bates had two lovely boys and dreamt of a girl to complete their brood. But when identical twin terrors Erin and Orla arrived, they turned the family upside down. The three-year-old girls look like sugar and spice - but they sure aren't nice - kicking, scratching and bullying their way around the house and lashing out at their local nursery. Dealing with double trouble from dawn till dusk has manic mum Sarah at her wits' end, while sons Callum (5) and Haydn (7) get overlooked in the chaos. Can Supernanny get the twins to tow the line? Or will teaching Mum how to relax be an even tougher task?