The main character, an inveterate technophobe named Gray, experiences a terrible tragedy - the murder of his wife by a gang of street criminals. As a result of the attack, he himself remains practically paralyzed, and now, in order to take revenge and punish all those involved, he has to join forces with a special computer program "STEM", implanted into the body to improve the physical functions and capabilities of a person. Having made an agreement with a computer mega-brain and having received incredible power-ups and abilities, he goes on the warpath against criminals.