Someone is killing the great minds of the Helios intellectual society and its leader is determined to get to the bottom of it after the third member, a distinguished archaeologist, is hospitalized and dies from an inexplicable disorder. Suspecting that it's an inside job, Helios leader Graham Deauville has Devon inspect the group's premises while Bonnie is inducted into the organization. Michael does a little checking on his own and fears for Bonnie's safety upon discovering that she's actually failed the Helios entrance exams. He tries to get her out of the place but he's too late -- the Helios scientists have already given her some mind-control drugs, and she orders him at gun point to take her back. Believing nuclear holocaust to be inevitable, Deauville's group has been building an underground city with the dig site as their cover -- until Litton got wind of their plan and threatened to go to the authorities. hey had no choice but to eliminate him, and now intend to do the same with Michael. They also want K.I.T.T., whom they reprogram to commit a robbery. Their multi-million dollar dreams fails to come to fruition when Michael, together with his trusty -- albeit temporarily reprogrammed Knight 2000 -- foils the robbery attempt.