Pat has a parcel for Amy which is too big to be stored inside his van. Ted builds a roof rack for Pat's van so that he can carry the parcel on the roof, but it is too heavy for that. Using the wood for the roof rack and the wheels from two old wheel barrows, Ted then makes a trailer for Pat to tow the parcel. When Pat manages to get on his way with the parcel, he meets some obstacles like sheep on the road and difficult short cuts, but he is determined to get the parcel to Amy no matter what.Meanwhile Bill is trying to ride his bike properly, which he is finding very difficult. Then Lucy arrives on the farm to tell Bill that Pat is stuck in the mud and they need Alf's tractor to pull him out. Alf is in the village and Lucy cannot go to find him as the wheel on her bike is started to come off, so despite his previous difficulties, Bill goes himself on his own bike, seeing as how Pat had been the one who had encouraged him to not give up on his practise. On his way to get help, Bill suddenly discovers how well he can ride his bike after all and once Pat is out of the ditch, he is soon teaching Sarah Gilbertson how to ride her own bike without stabilizers and without giving up.Now that the parcel has reached its destination, they can now find out what it was. When it is opened and they discover that it is trailer for carrying sick animals, Pat, Arthur and Ted feel very silly; if they had known, they could have towed it to Amy without its box and saved a whole lot of trouble. Amy is still grateful though at how everyone managed to get the trailer to her no matter what. It just goes to show that you should never ever give up on anything.