Don is a citizen of the Interplanetary Federation - yet no single planet can claim him as its own. His mother was born on Venus and his father on Earth, and Don himself was born on a spaceship in trajectory between planets. And he fights for the rights of this curious citizenship in very curious ways. Heinlein reveals in a dashing fast-moving style what can happen when politics - on an interplanetary scale - disregard the liberty of the individual. In the end, only the remarkable scientist-dragons of a rebellious Mars can resolve the conflict within a man who cannot live without the society that he knows is killing him.