Led by Colonel Jack O'Neil and Daniel Jackson, the Abydan refugees left Earth for a world of their own to call home. Instead they found hell. . . Earth's Stargate link to planet Ballas is broken, leaving the Abydan colonists stranded and stalked by a merciless enemy. Believed at first to be primitive beast native to Ballas, these cat-like predators arrived through the Stargate -- possessing superior firepower and innate military cunning. But who are these aliens, and why are they are Ballas? The answers lie in the secret past of an alien race -- a race that is all to familiar to O'Neil and Jackson.