As a child Great-aunt Alice Rumphius resolved that when she grew up she would go to faraway places, live by the sea in her old age, and do something to make the world more beautiful — and she does all those things, the last being the most difficult of all.
Henry and Mudge love to visit Henry's great-grandfather. In fact, they love visiting all of the grandpas that live in the retirement home. Together with his dog Mudge and all of the grandpas, Henry explores the woods, swims in a secret pond, plays checkers, and enjoys the stories of each of these lively old men.
Buzz is visiting Grandma, and Fly Guy comes along for the ride. Oops! Grandma swallows Fly Guy, then a spider, then a bird, then a cat, then a dog... She's about to swallow a horse, when Fly Guy shouts: "BUZZZ!" Buzz is starting to worry, but there is nothing Fly Guy can't handle!