For two thousand years, the starship
Astron
has search the galaxy for alien life—without success. Now, just as the ship is falling apart, the only direction left to explore is across the Dark, a one-hundred-generation journey through empty space.
The ship's captain—immortal, obessed—refuses to abandon the quest. He will cross the Dark, or destroy the ship trying.
Only Sparrow, a young crewman uncertain of his own past, can stand against the captain, and against the lure and challenge of the dark beyond the stars....