The Smith Clarkes are trying desperately to cope with their exceptionally aggressive and disruptive son, Cameron. Family and friends are at a loss as to how to manage the four-year-old, while his parents, Nicky and Chris, are at loggerheads about how best to deal with him.

Cameron's behavior has spiraled out of control since the family lost his younger brother Josh to cot death (also known as Sudden Infant Death Syndrome). Can Supernanny help?

Supernanny Jo Frost is desperately needed but soon realizes that Cameron is too naughty even for the naughty step. Can she sort the family out?