Thomas has a cracked funnel and goes to the Sodor Steamworks for a replacement. The first two funnels are too small or too big; so Kevin collects the only spare funnel left, which looks very funny and makes Thomas feel very embarrassed. Thomas is then sent to the docks to collect Mr. Bubbles' special bubble liquid for his show. Along the way, engines laugh at him. He puffs away quickly, spilling bubble liquid on the nearby road. This causes Sir Topham Hatt and Mr. Bubbles to crash into a muddy ditch, a haystack, and a pond. By the time Thomas arrives at Knapford, all of the liquid is gone. Thomas rushes away to collect some more. This time, he goes slowly and makes it to Knapford safely. The show is a great success and all the children realise Thomas' funny funnel looks just like Mr Bubbles' hat.