In the One State of the great Benefactor, there are no individuals, only numbers. Life is an ongoing process of mathematical precision, a perfectly balanced equation. Primitive passions and instincts have been subdued. Even nature has been defeated, banished behind the Green Wall. But one frontier remains: outer space. Now, with the creation of the spaceship Integral, that frontier - and whatever alien species are to be found there - will be subjugated to the beneficent yoke of reason.