This is good old-fashion science fiction. Beings are found to inhabit interstellar space and feed off the energy of stars. Their appearance is not far from that of stars either. They are vaguely tear drop shaped beings of energy themselves. They seem to be friendly enough and they have the absolute answer to Earth's energy problems. They think so differently, though, that it is difficult to communicate with them. Oh, they learn human language quickly enough, but their outlook on virtually everything is so different. Nevertheless, a young man manages to negotiate a treaty with them.