Winner of the Hugo and Nebula Awards for best novel Four travelers come to the ringworld. . .
Louis Wu: human and old; bored with having lived too fully for far too many years. Seeking a challenge, and all too capable of handling it.
Nessus: a trembling coward, a puppeteer with a built-in survival pattern of nonviolence. Except that this particular puppeteer is insane.
Teela Brown: human; a wide-eyed youngster with no allegiances, no experience, no abilities. And all the luck in the world.
Speaker-To-Animals: kzin; large, orange-furred, and carnivorous. And one of the most savage life-forms known in the galaxy.
Why did these disparate individuals come together? How could they possibly function together?
And where, in the name of anything sane, were they headed? (Google Books Summary)