Disclaimer: I sure don't own starcraft or anything that has to do with it.

At the same moment that Kerrigan had won over the human and Protoss forces in the Brood War, something moved on a desolate, far away planet. It had been claimed, lost and reclaimed again by all sides during the war, but no one ever imagined what lay beneath the cold surface of the ice-covered planet. It was something that had slept for ages; something that had been awakened; something that was so old it didn't even have a name anymore. 500000 years ago, it had travelled like a plague throughout the universe, killing anything and everything in its path. And now, it was awakening again. In the cold dead interior of the planet, stasis chambers opened to reveal what lay within, as the armories powered up and began their preparations.

Shadows moved trough the halls. They had waited for so long, and finally someone had triggered the watchers: the beings that served them with undying loyalty. They now looked at the universe, where they would once again spread death and decay everywhere. The Xel naga had known about them, and they had left many warnings for those to come, but no one had ever cared. Not the terrans, nor the zerg, and not even the wise Protoss had a care for it.

One of the beings laughed, its laughter reaching out to the four corners of space, heard by the Emperor Arcturus Mengsk, Praetor Artanis of the Protoss, and the Queen of Blades, leader of the Swarm. They knew something was wrong. Something was coming. Something that could be the end of them.