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.
Junie B. Jones has just turned six and is looking forward to her kindergarten graduation, but when grape juice stains the white gown she couldn't resist trying on, she is afraid graduation is ruined.
First-grader, Junie B. Jones, becomes upset when she discovers a loose tooth in the story, "Toothless Wonder;" and in "First Grade at Last," Junie B. is apprehensive about being in a new class with a new teacher and new friends.
Junie B.'s journal entries start with Room One's stomach virus excitement, the first-grade Columbus Day play, and getting the part of the Pinta, the fastest ship.