Henry Elgin loves music but hates practising his tuba. Then he is given a mysterious gift: a saxophone in a battered suitcase. Trying out the instrument, Henry suddenly discovers he's the hottest sax player in town!
But along with the suitcase and saxophone comes trouble - two invisible See-ers called Raff and Enzo who cause chaos wherever they go - and suddenly Henry's life is turned upside down. Then things go from bad to worse when Henry is asked to play at an important music festival and he can't find his Gift saxophone anywhere. It looks like he will have to use an ordinary saxophone! But if he fails, Raff and Enzo will be transmogrified into cockroaches . . .