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.
It's Presidents' Day, and Mr. Macky, the reading specialist, actually expects A.J. and his friends to read stuff about the presidents. Not only that, but he lives in a log cabin and thinks he's Abraham Lincoln! Is he for real?