Since the first film was made explaining the power of the atom, nuclear technology has made great advances. This film is an up-to-date account of the many areas of nuclear research and recent developments in Canada. It was filmed at the long-functioning atomic reactors at Chalk River and Rolphton, and at the latest and largest atomic power station at Pickering, as well as at laboratories across the land where experimentation is carried out in both pure and applied nuclear science.