The evil Megabyte wants to destroy Mainframe. To do this, he is sending glitches; if any of the glitches open over Mainframe, they will allow viruses from the net to enter the city. Assume the role of Bob, Mainframe's guardian, who must travel through 19 levels to stop the glitches. Megabyte wants to see Bob fail and sends robots, hover tanks, other assorted bad guys to stop him. Help Bob save Mainframe from evil in REBOOT.