When Angelica and the babies play 'dare' Angelica has to be nice all day and will get the babies ice cream. This works until the bully McNulty brothers arrive and Angelica is the only one who can stand up to them.
Lindsay does not welcome her new baby sister to the family at first, but the realization that she herself was once a similar baby helps her change her mind.
During the months that her mother is expecting, eleven-year-old Farla writes a series of letters to the unborn baby describing her feelings toward family members, friends, and her future brother or sister.
Through a misunderstanding, Junie B. thinks that her new baby brother is really a baby monkey, and her report of this news creates excitement and trouble in her kindergarten class.
When Minerva Louise, a curious chicken, mistakes a baby crib for a rabbit hutch, she searches for the rabbit and in the process discovers new additions around the house.