A class visit to the Gross-Me-Out exhibit at the science museum inspires Stink Moody to create a variety of terrible smells to put on the sneakers he plans to enter in the World's Worst Super-Stinky Sneaker contest.

Primrose Pumpkin, who always tries to be helpful, and her dog Dirk, who is very smelly, tries to locate the owner of a nose they find on a park bench.

Rosie the fox's excellent sense of smell is good for finding things, but she stops using it after everyone begins to call her "Nosy Rosie."