Inspired by folktales about fools from around the world, brothers Mac and Mac Noodlehead exasperate Uncle Ziti, are fooled by their friend Meatball, and make a garden for their mother.

Using knowledge from a library book, brothers Mac and Mac build a fortress but Meatball, armed with a book of his own, wants to take it from them.

After hearing Uncle Ziti's unbelievable story about a snake and a frog, brothers Mac and Mac are captivated by the idea of doing something impossible so that perhaps one day people will tell tales about their amazing feats.