Mr. Cranky Pants Monster is crankier then ever! Mess Monster has been in Mr. Cranky Pants Monster’s store and turned the place upside down! The call comes into the Monster Math Squad to help sort things out while Mr. Cranky Pants Monster chases away Mess Monster! At the store, the Squad learns all about PAIRS as they sort out the sock supply and then head out to match up the Horned Hoots and get them back into their cages. Word of the Day: PAIRS. Math Concept: Sorting items into pairs.