Yssa was an inhabitant of the planet of Z'lyztaya, she was one of the four survivors that were off planet when the alien destructive engine known as the Obliterator
systematically destroyed everything she knew and loved. With their home destroyed Yssa and the others sought to find a safe haven, but the Obliterator's mother-ship locked onto their ship in pursuit of them, which made their escape seem doomed. That was until they registered a subspace transmission coming from an unstable wormhole at the edge of their solar system. They quickly used the signal as a life line, and braved the dangers of the wormhole to the place of the signals origin, the planet Earth. Yssa, who was the pilot of the ship, was neurologically linked to the ship, died from the feedback caused by traveling through the wormhole.