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.

Daisy the dog likes to look at things but her little brother, Digger, explores every smell as they walk to the park for a picnic, but after sniffing a hole his nose fills with dirt, leaving him unprepared for the skunk they meet on the way home.