After discovering an ancient and mysterious dreadnought known as Sovereign, Saren Arterius was changed forever. Through the ancient Reaper, he learns the fate of the many civilizations of eons past. Instead of using Sovereign as a weapon, as he had intended, Saren makes it his goal to save the races of the galaxy by aiding the Reapers, proving the worth of organics to the Reapers so that they might be spared. He believes that servitude is the logical answer, instead of instinctively fighting to the finish. Aided by Matriach Benezia, a powerful Asari biotic and a spiritual leader, Saren sets the first part of his mission into motion: find a way to control the Geth. Either by persuasion or by force, which seems to be the latter. (This Challenge takes place before the events of Mass Effect 1)