Jessy and Nessy are playing with Nessy's train in the, when it suddenly disappears. Where did it go? They set off to find it, realising that they'll have to piece lots of different memories together to figure out where it went. Jessy and Nessy are all set to put on a play but they can't think of what happens next! How do their friends get ideas? And can they help Jessy and Nessy find some too?