A great evil looms over the galaxy. The Dark God, Amon, has returned. Spurred on by Zeratul's prophecies, Kerrigan and her Swarm set out to destroy Amon's hybrid forces, hoping to stop the coming oblivion. With the threat of the Zerg Queen absent, the protoss Hierarch, Artanis, raised a massive invasion fleet, left the Dark Templar homeworld of Shakuras, and committed to restore his people's former glory by reclaiming their lost homeworld of Aiur.