Thomas has been working hard clearing the lines of snow. The engines want to thank him by organising a party, but they want it to be a surprise. Thomas becomes increasingly annoyed that they are not sharing the secret with him.

Thomas is upset that James gets the task of delivering fireworks instead of him. Along the way to Knapford, James breaks down. Thomas is sent to help James, but the clock is ticking, and the display looks like it'll be called off.