Gifted with ambition and intelligence, the humans of planet Cassus experienced a period of rapid technological advancement more than two thousand years ago, leading to the development of space flight and interstellar exploration. Such achievements caught the attention of the Eldan's mechanical servants the Mechari, who brought news of these remarkable beings back to planet Nexus.
At the behest of their masters, the Mechari journeyed to Cassus in a fleet of hyper-advanced starships. Standing before an awestruck assembly of planetary leaders, they demanded that the legendary Cassian Sword-maiden Tresayne Toria journey with them to Nexus - and in return the Eldan would provide the Cassians a gift of immeasurable value. Refuse, they said, and the consequences would be dire. The valiant Tresayne agreed for the sake of her people, and she and her attendants were never seen again.
In time, the Cassians received their precious gift - an extraordinary human-Eldan hybrid known as Dominus the Half-Blood. Bearing gifts of powerful Eldan technology to the people of his mother’s homeworld, the message of Dominus was a simple one: swear loyalty to him, and together they would rule the greatest empire the galaxy had ever seen. The Cassians unanimously agreed, hailing Dominus as the emperor of the newly established Dominion.
Despite the Eldan's disappearance a thousand years ago, the Cassian-led Dominion has steadily taken control of the galaxy through intimidation, political intrigue and a score of impressive military conquests. For the Cassians, the discovery of planet Nexus represents the fulfillment of an ancient destiny - and they will stop at nothing to ensure that the Dominion reigns supreme over the legendary Eldan planet.