Thomas is looking forward to a big fireworks display that night. But first he is given an important special - to take a new light bulb to the Sodor lighthouse. Thomas is warned that the bulb will easily break and it must be delivered safely before dark so the ships can find their way. Thomas is so determined to finish his special that he can't resist speeding up. Thomas goes so fast that, when he comes to a section of track being replaced, he can't stop in time. He crashes through a barrier breaking the bulb! Thomas puffs off to collect a new bulb knowing that he will now be too late for the display. But when he sees the lighthouse beaming, Thomas thinks it looks as wonderful as any fireworks! While at the Wharf, Thomas uses his new whistle to make the narrow gauge engines jump. This makes the other engines laugh and soon they are all joining in the fun, making each other jump causing chaos across the Wharf! They have a wonderful time until an extra big noise derails Sir Handle. Mr. Percival arrives and puts the engines in their place. The engines all help clear up the wharf, before playing one last trick on Mr. Percival. There's a time and a place for having fun!