In a ravaged future where Earth lies choking beneath layers of industrial waste and dwindling resources, a desperate scientist unleashes what he believes to be salvation—a chemical agent designed to cleanse the atmosphere. Instead of redemption, the compound transforms exposed humans into grotesque mutants, which the scientist then harnesses as an army to consolidate power over the dying world. Humanity's last recourse comes in the form of Project Saber, a trio of genetically engineered cyborg warriors pushed beyond natural limits. When the first Saber, Kurtz, malfunctions and flees to Earth before deployment, the two remaining operatives—Allen and Sheena—receive their orders: eliminate the rogue scientist, dismantle his mutant forces, and neutralize their unpredictable predecessor.