A spaceship crashes in the Forbidden Forest. A strange little boy wearing a mask comes out of it and introduces himself to Casper. He says his name is Super Choc, that he comes from another planet and that his dream is to study at Scare School, the good reputation of which has travelled all the way to his planet. Unfortunately, Super Choc flunks the admission test to Scare School, and with Thatch's help he turns the teachers into chocolate statues and goes to Deedstown to spread terror. Casper must do everything he can to stop this evil duo and send this rebellious little super-hero back to his planet.