Having lost all control when his new implant was fully activated, and nearly killing Matt, Greg has fled the base and made his way into the DC metro area. It's up to Matt to track down his brother-in-arms and bring him back before he causes any harm to himself, the city, or its civilians. But what is it about the 'upgrade' that triggered Greg's mental break? Could there be a sinister secret hiding within the Project Red Spike files?
— Description from Comic Vine community (comicvine.gamespot.com).
