Thomas & Friends: Temporada 6, Episódio 18

6 - 18: Percy's Chocolate Crunch

A new rule is put in place where the engines can only have one washdown per day, which leaves Percy cross, as he has all the dirty jobs. He desperately tries to not get dirty and finds a train of sugar for the chocolate factory. He thinks he will stay clean doing this job, but he could not be more wrong.