Monster Math Squad needs to identify which monsters are pairs of each other.

Children are tested by Bad man to identify parallel and perpendicular edges and faces.

Numbers 10 and 6 discover the joys of being 16. As the number 16, they impress number 4 as they show all the ways they can be a square.

The shapes introduce themselves and their characterisitcs to the square.

Alan Turing comes to the realization that they can more easily break the enigma code by using produced words that they know will be in every message. The group determines that weather reports are a source of predictable words.