into servants. Their combined forces seek to corrupt the universe with Phazon by first executing a series of methodical attacks on three Federation planets: Norion, Bryyo, and Elysia. The game is primarily centered on these planets and three other locations that become accessible after completing certain in-game tasks. Plot Fleet Admiral Castor Dane, the commander of the Galactic Federation flagship GFS Olympus, calls for a meeting with Samus Aran and three other bounty hunters—Rundas, Ghor, and Gandrayda. The bounty hunters receive orders to clear a virus from several organic supercomputers called "Aurora Units", located throughout the galaxy. The meeting ends abruptly when Space Pirates attack the Federation fleet. Samus and the other bounty hunters are deployed to the planet Norion, where the Space Pirates are concentrating an attack on the main Federation base. While suppressing the attack, Samus learns that a Phazon meteoroid, called a Leviathan Seed, will soon collide into Norion. Samus and the other bounty hunters attempt to activate the base's defense systems, when they are suddenly attacked by Dark Samus. With the other bounty hunters knocked out, a severely wounded Samus manages to activate the system just in time to destroy the Leviathan Seed before she falls unconscious. A month later, Samus awakens aboard Olympus, where she learns that Dark Samus's Phazon-based attacks have corrupted her. The Federation equips her suit with a Phazon Enhancement Device (PED) that enables her to harness the Phazon energy within herself. She is informed that her fellow bounty hunters, also corrupted with Phazon and equipped with PEDs, have gone missing during their missions to investigate several planets embedded with Leviathan Seeds. Samus is first sent to the planet Bryyo and later Elysia to determine what happened to her missing comrades. She soon discovers that both planets and their inhabitants are slowly being corrupted by the Leviathan Seeds and that she must destroy the seeds to reverse this. Samus encounters heavy resistance from the Space Pirates, Phazon-corrupted monstrosities, and her fellow bounty hunters who have been corrupted by Dark Samus. Throughout her mission, which eventually takes her to the Space Pirate homeworld, Samus slowly becomes further Phazon-corrupted. She manages to stop the Space Pirate assault with the assistance of the Federation troops. After stealing a Leviathan battleship, Samus and the Federation fleet use it to create a wormhole that leads to the planet Phaaze, the origin point of Phazon. Samus travels to