A school trip to the natural history museum goes awry when the curator, Ms. Krup, loses her giant cockroach and A.J. and his friends decide to explore the museum in the middle of the night.
When Dr. Floss visits Ella Mentry School on National Dessert Day, the kids think she will warn them of the dental dangers of sweets, but she wants the kids to eat sweets so they will need a dentist!
Getting a chance to choose a guest speaker at their third grade graduation, A.J. and his classmates have their minds set on the most popular singer and rapper in the world, Lil Mouse, to have the greatest graduation in the history of graduations.