When Nick drops the mail bag into his train set, his fingers are too big get it out. Cat shrinkamadoodles them so they are small enough to be in the train set. But when the Thingamajigger falls out of reach, they need the right sized tool to help them out.

Sally thinks that the three stick she has are not enough to make anything.Cat takes them to a place where they can get more sticks. And along the way, they discover just how many things you can do with three sticks.