Jerry, Jimmy and Kathleen never imagined that they d be spending their summer vacation at a school. But now that they are, they wish it to be fun. When they blunder upon a castle, they wish it were enchanted. They believe so in earnest when they rouse a princess from a hundred-year sleep. But are they disappointed when they find out that she is fake? Not a whit! They wish so even more strongly. When Mable, the fake princess, helps them find a magical ring, it is a dream come true for the children or is it? It may just be their worst nightmare, unfolding little by little!