Destiny is set seven hundred years into the future in a post-apocalyptic setting. In a universe where humans had spread out and colonised planets in the Solar System, an event known as "the Collapse" saw the mysterious dissolution of these colonies and left mankind teetering on the brink of extinction. The only known survivors of the Collapse are those living on Earth, who were saved by "the Traveler", a white, spherical celestial body whose appearance centuries before had enabled humans to reach the stars