Good Manners. Not Just Thank You and Please

Far, far away, at the very edge of the earth, there is a wonderful place called Gloomy Ravine. All sorts of creatures come here to send their children to the local school, where the lessons are taught by the best teacher in the world - Mr. Centaur. But will his students be able to come together and put on a performance that will amaze even the Mayor of the city, if Greta is always interrupting, Eugene is burping loudly, and Wolfie is picking his nose?.. Our heroes will have to work hard and learn that good manners are not just "thank you" and "please".