A young scientist's efforts to regenerate the minds of brain-dead patients is endangered when his own single-mindedness drives off his assistants and alienates his superiors. He links up the patients' brains, which hooks up the subjects together, in another reality. But the method threatens the continuation of the study.

On a ship controlled by an authoritarian computer maintained by human slaves, a man and woman learn that the ship fears them. The humans dream of sabotaging the ship's sentient control system and free themselves.