The North Yorkshire Moors Railway is about to open its door for a new season. To pull in the crowds they've hired in star steam engine, Royal Scot, to headline for the week. Head of Carriage and Wagon Kieran, is responsible for the carriages Royal Scot will pull. But with only one day to give them a test run he's under pressure - especially as some of them haven't been in service for five years.

The busy summer season is looming and the steam engines are old, so there's always something to fix. The only chance of getting through the summer is if they complete the overhaul of Repton, a 1934 Schools class engine.