Two ancient races from the dawn of time manoeuvre to decide the fate of the universe. The Eddorians seek to dominate all life, while the Arisians manipulate only so that the peoples of the universe can be free. To the Arisians, the young races are more than pawns, and they give worthy members a powerful psionic amplifier, the Lens, to help them to battle the conspiracies of Eddore.

Based on the Lensman series by E.E. 'Doc' Smith, this book details the Universe of the Lens, with information on the Arisians, Eddorians, the Galactic Patrol, the main races and major planets. Full character sheets are given for the unattached lensmen, Kimball Kinnison, Clarissa MacDougall, Worsel, Nadreck and Tregonsee. Also included is a ship construction system and the cinematic Space Opera Combat System.