 While Herman and Grandpa are watching television, a curious system allows them to see Lily and Marilyn talking in the kitchen. They hear something about a new child, coming to visit the house for a few days. Herman believes that Lily s expecting a child and he gets excited for all the matter. The truth is that Marilyn will care for a boy named Elmer, the family s doctor son, for a few days. Herman is a little bit worry because Lily hasn t told him yet about the new son. He ll try to make Lily to tell him all about Eddie s new "playmate" in a discreet fashion. But Lily gives Herman the doctor s card, and Grandpa advice him not to worry about Lily, that women are specialized in hiding these secrets. Grandpa comes up with the idea of making a visit to the doctor that night. But Dr. Edward Dudley doesn t see anything without his glasses, and he won t see that Herman s one of his patients. Herman asks Dr. Dudley whether Lily s expecting a boy, and believing that Herman is talking about Elmer, he says yes, that everything s set. Next day, Lily is thinking about giving Herman a new car for his birthday. She goes to a car lot and will choose three cars. Herman and Grandpa are still confused about the matter of the new son, and when Lily s speaking with the clerk by phone, they ll believe that she s talking about the baby. However, when Elmer comes to the house he goes to play with Eddie. Lily tells Herman that Eddie s new playmate has arrived and that he s in the living room. Elmer brought a Frankenstein boy doll, and when Herman sees the toy walking mechanically, he ll think that it s his newborn son. Eddie and Elmer explain to Herman that is only a toy. He faints and later Marilyn explains all the matter to his uncle. But Herman will cheer up after seeing that Lily has bought to him a new car, actually, a three-in-one car.