Former elite assassin "Specter", Melissa, retires to look after her sick daughter, Harper. When the Genesis Syndicate kidnaps Harper for organ harvesting, Melissa reclaims her lethal skills. She decimates their forces, only to face her former mentor, who uses Harper as bait for a serum. Driven by a mother's fierce love, Melissa destroys the Syndicate. Together, they emerge as protectors of the helpless.
