24 Fish

A special load of fish is ordered and extra vans are needed for "The Flying Kipper" and, to Henry's annoyance, the only vans available are old and unused. Duck shunts them into position and moments later, Thomas arrives with the post train and he warns him to take care, reminding him of his own experience with fish. Henry is still complaining about his extra load, but his driver tells him that at least another engine will be there to help.

At Wellsworth, Duck waits for Henry and when he arrives he moves to the back to help him to the top of Gordon's Hill. As the train nears the top of the hill, the tail-lamp falls off. After that, Henry slows down while Duck suddenly loses sight of the train and as he frantically runs after it he crashes into the last van causing loads of fish to spill out and bringing the train to a halt.

The mess is cleaned up in the morning and the missing tail lamp is found at the bottom of the hill. The Fat Controller tells Duck that the accident was not his fault and that the crew should have fitted the tail lamp on properly, and Duck reflects that Thomas' earlier advice about fish was right.