AllMovie

At the insistence of Ricky (Desi Arnaz), Little Ricky (Joseph A. Mayer and Michael Mayer) spends his first day at nursery school -- and Lucy (Lucille Ball) is as nervous as a mother hen. Much to her relief, the boy adapts well to school, but close proximity to other children causes him to develop a slight cold. Lucy takes Little Ricky to the doctor, who diagnoses tonsillitis, necessitating a minor operation. Determined to spend the night with Little Ricky in his hospital room, Lucy disguises herself as a nurse -- and the medical profession will never be the same.