S04E01 - Jusqu'au plus petit morceau
Synopsis
When Wanda's favourite singer, Molly Cule (Wynonna Judd), comes to town, she chooses Ms. Frizzle's class to wash her famous car. The kids clean it from top to bottom, but when Molly insists they missed a spot, they shrink down to see the molecules that make up the car. Only then can they discover how to clean it down to the very last bit. But time is running out — they'll need a molecular miracle to get the car clean before Molly's concert begins!