Thomas hides his snowplough on a siding, and pretends to not know where it went when questioned. Sir Topham Hatt leaves Thomas in the shed, resulting in Emily having to clear his branch line for him. She does not like the snow at first, but grows to enjoy it.

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.