Supernanny Jo Frost faces a tough assignment when she agrees to move into the home of single mum Kelly Steer. Kelly's two young children have pretty much destroyed the family home. Out of control four-year-old Callum and five-year-old Sophia dominate the house. They fight with each other, won't eat properly, destroy their bedrooms, refuse to sleep at bedtime, and worst of all, they have been known to physically attack their mum. Can Supernanny Jo make her mark this week, or does it all prove too much for the Steers?