Today we meet a new family. Brother and sister Noah and Isla are playing at being train drivers, with their cuddly toys as the passengers. The pretend train is off to London where the toys get to meet Queen Isla. Then it's off for a trip with Mum and Dad on a real steam train. As a special treat, Isla and Noah get to see how the train works and talk to the driver. But what will they think of the scary, dark tunnel?