Donna and Billy Jo Drake have three adorable but extremely lively kids (Josie, four, and three-year-old twins Jared and Justin), and they often lean on Donna's mom, Mimi, who lives next door, for childcare. Mimi is a lifesaver, helping out with the children, whom she emotionally calls "her heart." But the kids are such a handful that Supernanny worries they'll give Mimi a heart attack! When Mimi gives the twins a time out, she's literally pulled in different directions on the floor by their squirming and defiance, because she insists on holding on to them the whole time. Plus, the Drakes have a beautiful new RV, perfect for family vacations, but the parents are so over-protective with the kids that just a family walk induces parental panic.