Leo and George enrol in a baby care class in an attempt to ready themselves for grandfatherhood, but their first assignment leaves them sifting for ways to reverse their troubles when their ""baby"" — a flour sack — has an accident. Leo wants to prove to Casey that she can count on him to babysit, so he enrolls himself in a baby care class, dragging George along as well. The two men are by far the most unusual couple in the class, and their first assignment is to care for a 10 pound sack of flour as though it were their baby. Unfortunately, the ""baby"" accidentally rolls off the roof of Grandpa George's car, and he and Leo then concoct a scheme to get a new ""baby,"" hoping no one will know the difference.