Air date: September 6th, 2007 (UK), September 29th, 2007 (US)
One foggy night, Percy breaks down on his way home, so Thomas brings him back to Tidmouth Sheds. On the way, Percy sees some lights flashing in the sky and is convinced it's a spaceship. Gordon dismisses these claims, but before Thomas can argue, the Fat Controller gives him the job of pulling Percy's mail train. Thomas sets off and promises to prove Percy right.
On the way, he sees flashing lights at the bottom of Gordon's Hill, but it only turns out to be workmen performing maintenance. He later sees another flashing light, but it turns out to only be the lighthouse. He finally sees some flashing lights gliding through the sky and follows them, but it turns out to be Jeremy landing at the Sodor Airport.
Exhausted and disappointed, Thomas realises that he has not done his job of pulling the mail. He sadly returns to Tidmouth Sheds and asks Gordon to help him deliver the mail on time. Gordon, feeling important when being told how fast and strong he is, agrees to help. The next night, the fog is gone, and as all of the engines watch Jeremy land, Percy believes Jeremy's more splendid than a spaceship anyway.
Tropes featured in the episode:
- Big Brother Instinct: Thomas doesn't take kindly to Gordon calling Percy silly, and vows to prove his claims of a spaceship right.
- Jerk with a Heart of Gold: Gordon, despite mocking Thomas and Percy for believing in spaceships, is still willing to help Thomas deliver the mail on time.
- Rule of Three: Thomas sees three light sources that he mistakes for a spaceship - some fog lights, a lighthouse, and Jeremy the Jet Plane.
