Being a socialist society, everything is shared equally among the Yithians. If something is needed by a certain Yithian, he takes it, with the blessings of his kin. The Great Race worship no known god. From Beyond - Each time the Great Race's society has fallen toward a final doom, the best and the brightest were chosen to travel onward, displacing another race in a distant time. In the Earth of the present, a new epidemic hits.
Numerous people undergo sudden personality changes and leave behind their past lives.
This is the result of an invasion from ancient Yith. These are not the philosopher Yithians which the investigators may be familiar with, but instead are ancient rebels unwilling to die with their world. Only by allying with the Yithians at the beginning of time will the investigators be able to fight off this invasion. The investigators gain a new patron, a peculiar philosopher who has the most outrageous views of the universe. He has gained new knowledge and a new understanding of the world in that future time, and seeks to use the investigators to further his own end.