Single mum Tara is being victimised by her four year old son, Rhys, and stroppy daughter, Shannon (aged 7). Eight year old Casey also suffers due to her siblings’ bad behaviour. She gets overlooked while mum struggles with the constant abuse and tantrums from the two younger kids. Inevitably, Tara loses her temper and voices are raised. Can Supernanny transform this bedlam into a happy family?