Cheryl McMillion is struggling to raise her three children on her own, while her husband, Jonathan, a National Guardsman, is serving his tour of duty in Afghanistan. However, while Dad is overseas, there's a battle to keep the peace on the homefront, as the boys -- Ryan, nine, Hunter, seven, and Garrett, three -- act out by fighting and yelling. Mom's had it with the aggression in her family, and turns to Supernanny for help.