Plot

Sent to Edward's station until the big engines' anger at him over Diesel's lies cools, Duck has to avoid a group of runaway trucks that try to force him into an accident.

Duck is sent to Edward's station and feels that all the engines dislike him. Edward helps to cheer Duck up by working together. The work goes well until the troublesome trucks uncouple from Edward and push Duck off the rails causing an accident. Duck soon returns home to the yard where the engines now like him.

After having been framed by Diesel for telling lies about the engines to the Troublesome Trucks, Duck sadly goes to Wellsworth per the Fat Controller's request where he meets Edward, whom he tells of the incident. Edward assures Duck that the Fat Controller will find out what's really going on and asks him to help out with his goods train.

Duck feels better as he and Edward set to work with at once. Edward pulls the train while Duck pushes bunker-first from behind. The trucks are silly, heavy, and noisy and the two engines are forced to work hard all afternoon. When they get to the top of Gordon's Hill, Duck bids farewell to Edward and heads back to the station. But as he coasts down the hill, enjoying the breeze, he suddenly hears the whistle of a Guard who was knocked out of his brake van because Edward's trucks have broken away and are intent on chasing Duck down the hill and derailing him.

Duck tries to make a break for it, but the trucks gain on him quickly. Luckily for Duck, the trucks only catch him gradually and don't throw him off the rails, but they catch him suddenly on the viaduct, so Duck is forced to keep going at top speed as the trucks push him. Just as they're starting to regain control, Duck and his driver spot James pulling out of the station ahead on their line with a passenger train. Duck tries his hardest to stop the trucks, knowing that a serious collision will result otherwise, but is unable to. Duck shuts his eyes and braces for the collision and is about to run into the coaches when he's diverted into a siding at the last second.

At the end of the siding, a barber has set up shop and is shaving. Duck barrels down the line and crashes right into the front of the shop, completely destroying the wall. Behind him, most of the trucks derail. The trucks pay no attention to the damage; they're rather proud of themselves. As Duck peeks in through the debris, he apologizes to the barber, who's furious and lathers Duck's face with shaving cream as revenge for frightening his customers.

Thomas arrives to help clear the mess, while the Fat Controller speaks with the barber and explains that while he understands how upset the barber is, Duck and his crew helped to prevent a much more serious accident with James' train, and remarks that it was a very close shave. The barber washes Duck's face and apologizes for his mistake. Duck accepts the apology while the Fat Controller compliments him for his bravery and that he's proud of him.

Soon, the remains of the trucks are taken away and Duck's pulled out from the barbershop by Thomas. The Fat Controller tells him he'll be returning home once he's properly washed and repaired. Duck becomes worried, believing that the engines still hate him and prefer Diesel. The Fat Controller tells Duck that's no longer the case, as he never believed Diesel and has sent him packing. The other engines are now all very sorry and want Duck to come back.

A few days later, after being mended, Duck returns to the shed where the other engines welcome him back with happy whistles. Proudly taking his place alongside them, Duck feels happier than ever to be home with his friends.