Dymuniad Dylan: I Ble Aeth yr Athrawon?

What happens when you make a wish that comes true... again? Dylan isn't pleased when his new teacher, Mr Jones, stops him from coming on the class trip to St Fagans, so he makes a wish - he wants every teacher in the WORLD to disappear! All the schoolchildren want to know where on EARTH are the teachers? Only Dylan has the answer... is it too late to make everything right?