Diesel's Ghostly Christmas Part 1.Thomas is due to take a group of singers to a rehearsal. When the Fat Controller arrives, he says he needs to be at the docks, but has a broken ankle and cannot drive. Thomas asks Diesel in the yard if he could help, but Diesel says he's "busy" and oils away. Thomas asks Emily instead, who is happy to help. At Brendam Docks, Cranky is about to lay down a Christmas tree on a flatbed and orders Diesel to push it under the down-coming tree, but Diesel only oils away. Salty finally arrives, but the tree lands on him instead. Paxton is later on route to Ulfstead Castle with the tree, until he derails. After Diesel passes by, Thomas arrives and asks if it was him, witch Paxton confirms. Later, Emily is pretending to be "E-Marley's Ghost" at the Dieselworks. She tells Diesel to stop being an unhelpful engine. Diesel later runs away. At the docks, he doesn't find the Fat Controller, but the "Ghost of Christmas Past" is on a ship, and tells Diesel about his past mistakes. Diesel eventually gets more scared and leaves, while Salty and Cranky laugh after he has left.