Sir Topham Hatt has lost his voice so Lady Hatt gives Percy the job of handing out his instructions for the day. Percy has lots of things to remember. Thomas offers to help, but Percy is determined to do it on his own. Percy goes to see James, Gordon and Toby but gets things muddled up, giving his friends some very silly jobs! Disaster strikes when James, Gordon and Toby crash into each other - all thanks to Percy. Percy is very sorry and asks Thomas if he'll help after all. Thomas is only too pleased to help his friend and together they retrace Percy's tracks. Percy finally remembers the jobs that Lady Hatt has told him and Percy puts everything right. Sir Topham Hatt is very please with Percy. He has been really useful! It's the country fair in the hills and Duncan is to take the bell from the clock tower to be specially polished. Duncan enjoys the sound the bell makes going over the bumpy tracks. He enjoys it so much that he doesn't listen to the foreman's instructions to go slowly. He doesn't listen to anyone telling him to slow down, until disaster strikes and Duncan hits a dip in the track - the bell bounces off his flat-bed and down the hill. Duncan is horrified. In the quiet, he hears the bell chiming - it's stuck in a tree. Duncan races to it, just in time for it to fall back on his flatbed. Slowly and carefully Duncan takes the bell to the polishers. At the fair, the shiny bell rings and Duncan thinks it's the best sound in the whole world!