When Ivan Zhilin, interplanetary engineer, returned after years of space work, he wanted a quiet vacation on some sunny restful spot on Earth. At first it seemed he had found the place----a charming seaside city in a 'liberated' country.

But somehow, since his long sojourn in far orbits, things had subtly gone wrong. He got disquieting hints of irrational actions, of secret societies of a destructive nature, of events of mass madness...and a constant reference to a mysterious product available only through the 'right' connections.

When he pursued the enigmas, he found himself projected into THE FINAL CIRCLE OF PARADISE----the ultimate electronic 'high'!!!