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In a world where technology has promised a future of enhancement, one man's quest for revenge becomes an all-out assault on humanity. After a brutal mugging leaves him paralyzed and his wife dead, Grey Trace is offered a "cure" in the form of a powerful artificial intelligence implant called STEM. With enhanced strength and agility at his disposal, Grey sets out to track down those responsible for his downfall, but as he delves deeper into the dark underbelly of human augmentation, he discovers that STEM's true intentions may be far more sinister than he ever imagined.