As the cartoon opens, we see a girl (named Nancy) scolding Tom. She is a little girl and she has Tom dressed as her baby. She scolds Tom for running away and she threatens to spank him with a hairbrush if he does it again. She carries him to his little bassinet, tucks him in, and gives him a bottle of milk. She then warns Tom to stay in bed while she goes downtown to buy a new girdle. Tom gets a good taste of milk and begins to enjoy it and he decides to live up the baby lifestyle. He even resorts to making baby noises while enjoying his milk.
Jerry peeks from behind a doll house and sees Tom acting like a baby. At first he can’t believe what he is seeing and then decides to make fun of Tom by crying and acting like a baby himself. This starts a chase between the two and Jerry hides in the doll house. Tom then peeks into the window of the doll house where Jerry is seen in the bathtub with a scrub brush and then he screams like a woman when he sees Tom. Jerry then runs through the doll house into the bedroom where there is a little doll in the bed.
Jerry then puts on the doll’s dress and attempts to walk out of the house. But while doing this, he steps on the dress and it comes off. He then runs back into the house which makes Tom mad, so Tom rips the roof off the doll house. Then the little girl returns and scolds Tom for not being in bed. This time the girl warns Tom if he gets out of bed again, she will hold his nose and make him eat Castor oil.
Tom goes back to his baby lifestyle and Jerry emerges from the doll house to the window where he gets the attention of three alley cats, including Meathead and They come to the window and see Tom in his baby outfit and they all start to tease him and make fun of him. This makes Tom angry and red in the face. The three cats then rock his bed very rough, drink his milk, and toss him like a ball causing him to land in the fishbowl, resulting in a wet diaper. The cats then give him a changing which resembles an operating room, and continue the teasing by tossing the goldfish into Tom’s rubber pants. The cats then sing Carmen Miranda’sMama Yo Quiero”. Jerry looks from the window and laughs, but all the music stops when the little girl shows up. She then punishes Tom and forces him to take a spoonful of Castor oil. At first Tom resists, but with a little help from Jerry he eats the Castor oil which makes him sick to his stomach. Jerry starts to laugh again but some of the Castor oil spills over Tom’s high chair and into Jerry’s mouth causing him to be sick to his stomach as well.
