Enredo

Henry, a big green engine, doesn't want to risk paintwork being ruined by rain, so refuses to leave a tunnel he enters on a trip. But he may end up being there longer than he wants as he ends up being bricked up.

It's a very rainy day on Sodor and a big green engine named Henry is pulling a passenger train. He runs into a tunnel and stops in it, unwilling to go any further.

Henry's driver and fireman argue with him, but find that he refuses to come out, claiming that the rain will spoil his green paint with red stripes. The guard tries blowing his whistle and waving his flag, but Henry instead blows steam at him.

Just then, an important man arrives on the next train; it's Sir Topham Hatt, the man in charge of all the engines on Sodor, better known as the Fat Controller. He decides that Henry will be pulled out of the tunnel. Attaching a rope to Henry, all the passengers try and pull him except for the Fat Controller, citing it's his doctor's orders. When Henry doesn't move, the passengers move to the other end of the tunnel and then they try to push him out, again without the Fat Controller's help, but with the same results.

Thomas arrives to help and the passengers point out to Henry that the rain has stopped, but Henry still refuses to move, believing that the it'll start to rain again. Thomas tries to push Henry out, but even with another engine pushing, Henry remains in the tunnel. Finally, the Fat Controller admits defeat and, having had enough of Henry's stubbornness, tells him that they will leave him there. Soon, the rails in front of Henry are taken up and a brick wall is erected in front of him.

Henry soon regrets his actions as he thinks no one will ever see his paint work again. As time goes on, Edward and Gordon always pass by; Edward always toots hello with his whistle, while Gordon laughs at Henry, saying it serves him right. Henry has no steam to answer them and the soot and dirt from the tunnel ruin his paint anyway. Henry is left in the tunnel cold, dirty, and very sad, wondering if he'll ever be allowed to pull trains again.