Award-winning authors Frederik Pohl and Jack Williamson, two of the most respected names in science fiction, draw on the speculations of cosmologist Stephen Hawking to take us to a future in which humanity has sold its birthright - and is happy in the bargain.
Earth has been immeasurably changed by the arrival of a superior alien race. Dubbed "Turtles" by humans, they have conquered Earth without a fight. Who in his right mind would oppose the bringers of peace, prosperity and plenty of trade goods - even if the Turtles did treat humanity like a group of wayward children
But when the Mother, the single female of the Turtle species, disappears, suddenly the aliens need human help. Led by the only human who can fly a Turtle waveship, a search party takes off on a mysterious journey to the Turtles' Mother planet - and to the most carefully guarded secrets in the universe.