Single mom Jency Williams has three unruly children: Bradley (12 years old), Kelsey (10 years old), and Hagen (5 years old). Jency works two jobs to make ends meet, drops the children at her grandparents' house, so that they can take care of the kids while she is at work. The children are calm and respectful with their great-grandparents, Hal and Carolyn, who are in their seventies. Hal and Carolyn ask Supernanny, Jo Frost, to come and teach their granddaughter Jency to discipline her own children.