It's a snowy day in Juju City, and Diesel, a train, is worried that he won't get a Christmas present because he thinks only good trains get gifts. However, Diesel soon finds himself on a special mission to help Santa Claus deliver presents to children all around the world. Along the way, Diesel meets a flying train and helps it reach the North Pole. As a reward, Santa gives Diesel a special gift, which Diesel takes back to his home in Chuchu City.
The next day, Diesel and his friends, TT Po and Toyo, try to make up for missing a fan meeting with Super G, a popular train hero. They put on a play, but it doesn't go as planned. However, they soon get another chance to meet Super G when they visit a film set where Super G is being repaired after breaking down. Diesel, being a mechanic, is able to fix Super G, and as a thank you, Super G lets Toyo meet him. The episode ends with Diesel and his friends feeling happy and fulfilled after helping Super G and making Toyo's dream come true.
Here are the key facts extracted from the text:
1. It is snowing in JuJu city.
2. Diesel is going for a checkup at the production plant.
3. Diesel helps a train that is broken down and cannot fly.
4. The train is going to the North Pole to deliver Christmas presents.
5. Diesel agrees to help the train and its passengers.
6. Diesel and the train fly to the North Pole.
7. They deliver the presents and meet Santa Claus.
8. Diesel returns home with a new toy train set.
9. TT Pa and Diesel plan to put on a play about Super G for Tayo.
10. They gather costumes and prepare for the play.
11. The play is a success, and Tayo enjoys it.
12. Super G is in town for a shooting, and TT Pa and Diesel take Tayo to meet him.
13. However, the road is closed due to the shooting, and they cannot meet Super G.
14. TT Pa and Diesel offer to help fix a broken train used in the shooting.
15. They successfully fix the train, which is Super G.
16. Super G thanks them and offers to let them watch the rest of the shooting.
17. TT Pa and Diesel are thrilled to have met Super G and helped him.
Note that these facts are based on the provided text and may not be a comprehensive summary of the entire story.