It's a perfect society ... just don't grow old.

Young advocate Arthur Enlight lives in a seemingly benign society based on social harmony and cooperation, where everyone contributes as part of the "Good Government" system. One day Grandpa Jones, an old sick man, shows up in Arthur's office, asking that Arthur represent him.

Deemed "no longer relevant" and a burden to society, Grandpa Jones is to be sized, his body changed to a toddler-like state, cute and small and easy to care for and no longer able to speak or walk.

But Grandpa Jones doesn't want to be sized, believing he's still relevant and still has something to offer society. Soon Arthur believes it too and his fight for Grandpa Jones has consequences far beyond anything he anticipated.