SIRIUS 6B, Year 2078. On a distant mining planet ravaged by a decade of war, scientists have created the perfect weapon: a blade-wielding, self-replicating race of killing devices known as Screamers designed for one purpose only -- to hunt down and destroy all enemy life forms. A military commander stationed off planet during an interplanetary war travels through the devastated landscape to negotiate a peace treaty, but discovers that the primitive robots they built to kill enemy combatants have gained s...