The Missing Christmas Decorations

The Missing Christmas Decorations is the Season 17th Christmas episode of Thomas and Friends.

Plot
No one knows who keeps taking the Steamies’ Christmas decorations from Tidmouth Sheds! Percy discovers Diesel 10 stealing the supplies and chases him back to the Dieselworks, where he also discovers poor forgotten Sidney hanging from the ceiling waiting for new wheels. Percy surprises the other engines by giving Sidney a special Christmas present and teaches everyone about the generous spirit of Christmas.