The young Princess Irene lives in a castle on top of a mountain, the miner boy Curdie lives in a hut on the side of the mountain, and the wicked goblins live inside the mountain. One day, Curdie is working in the mines, when he hears the goblins hatching a sinister plot to kidnap the princess. Now it's up to Irene and Curdie to foil the goblins' plans, and the only person who can help them is Irene's great-great-grandmother.