Two alien races - the psionic protoss and the bestial zerg - clash in the Koprulu sector, throwing it into chaos. Caught in the crossfire, terrans fight for their lives, and a rebel named Arcturus Mengsk ascends to power. His ruthless tactics ultimately give rise to two of his greatest enemies: former marshal James Raynor and the deadly Queen of Blades. As losses escalate among terrans and protoss alike, there may soon be no one left to hold back the Swarm's advance. This is the music of war, betrayal, and loss. This is the music of Starcraft.