Thomas & Friends: Season 17, Episode 19

17 - 19: The Missing Christmas Decorations

Diesel 10 is cross that the Dieselworks has less decorations than Tidmouth Sheds. In an attempt to gain more, Diesel 10 steals Christmas decorations over the course of a few days, unbeknownst to the Steam Team. Percy is upset by this as it does not reflect the spirit of the holiday, and is determined to find out who it is.