During the period of The Great Migration, The Carrier Flag Ships Exodus-B and Exodus-D split of from the main fleet after tensions and desperation arose among the Alphian People. The two flag ships severed communications with the entire fleet in search of a new planet to settle on and rebuild. Nothing is known about the fate of the two ships. Unfortunately months after the split, an Unanta-Class destroyer found doggerland and informed the remaining fleet to settle there, as it was a perfect world to thrive in.
On October 20th, 2282, Alphian Radar stations in Eindhoven, Doggerland, detected a familiar radio signature from deep space. After weeks of decryption, it was revealed that it was a transmission signal from the Exodus-D ship AI, known as Ytuni.