Caillou wanted to ride a train, so everybody else from Arthur and Rugrats. Caillou can hear the train coming, but gets scared as the train gets closer. He ran to Mummy for cover as the train smokes on the Rugrats, and refuses to go on board, but feels braver and climbs in. He tells the driver they'll be on it for 2 days. The driver makes tickets for the people, and tells Caillout he'll be seen later. A train robber/killer walks to the train and jams the door. Later, odd things happen, while Sue Ellene and Inspector Gadget are riding on the train. The people eat food at a resturaunt, then at nighttime, the killer shoots a person, which is Grandpa Boris. Caillou goes to bed at the end.
- Caillou: Mummy! (he looped, then speeds up)
- Daddy: It's very big.
- Caillou: (blurting) OH SHIT!
- Chuckie: (as the train blows smokes) Ahhh!
- Narrator: Caillou can't believe how big the train was, the noise frightened him!
- Caillou: I want to go.
- Daddy: There is nothing to be afraid of.
- This was the first Caillou Poop where the Rugrats and the Arthur people are seen with Caillou.
- Goof: The end was supposed to be at nighttime, but in one scene it is daytime.