Measle Stubbs lives in a dreary, horrible house, with Basil Tramplebone, his dreary, horrible guardian. His life is miserable, and suddenly gets worse when Measle finds himself on the wrong end of one of Basil's evil spells. Now he's only half an inch tall and trapped in the world of a toy train set. But when Measle joins up with Basil's other victims, he becomes more than just a smelly little orphan. Suddenly he's a hero ... with a plan!