A film portrait of Princeton University's leading space propulsion scientist of the 20th century. It was for this work that Professor Jahn was honored with the position of Dean of the Faculty of Engineering. But he was later demoted by the Princeton authorities after he began to pursue pioneering research into the apparently forbidden science of "mind/machine interaction", generally known as micro-psychokinesis. The film shows the startling results of his experiments, as well as interviews with some of his detractors who condemned his research as "pseudoscience" - an accusation he rejected as itself unscientific. "One should be able to do research on spirit." he insisted. Bob Jahn died in November 2017.