The princess and the goblin

Princess Irene's discovery of a secret stair to the top turret of the castle leads to a wonderful revelation. At the same time, the miner's son Curdle overhears a fiendish plot by the goblins who live below the mountain. It will take all of their wit and courage, plus the help of Irene's magic ring, to make sense of their separate knowledge and foil the goblins' schemes.