En cours de chargement...
Chrissie loves trains. She has train books, train pictures - and, of course, model trains.
But Chrissie has never been on an actual train. In part, because Chrissie doesn't find getting around as easy as other people.
Then, Chrissie finally gets on a train, with her Grandpa Henry, to go down to London for an important operation.
Her parents and Henry hope the journey will take Chrissie's mind off things.
And they're right: but in a way they couldn't possibly imagine.
Because Chrissie's trip from Scotland to London turns out to be quite literally magical - and is going to change Chrissie's life forever.