It is the year 5012 and the Milky Way galaxy is under attack.
Having escaped Xion, the crew of the Phoenix needs to find a way back home, but before they can locate the Milky Way they see a monstrous object looming through space towards them. It's the legendary Extractor - destroyer of planets - and it's on its way to destroy Xion. Faced with a dilemma: return home, or help save the aliens who just tried to kill them, Peri decides to use his half-human half-robot skills to try and save the Xion. Only then can they go home.