Destruction or enslavement. Earth faces one or the other. Neither alternative is acceptable to the Administration of the Solar Empire. So Rhodan contacts Harno, an Energy Being in the form of a sentient globe that has proven helpful to the cause of Terra before. Added to the cast: Onot, a mysterious ghost from the past. As the Druufs fight one of their bitterest space battles with their mightiest fleet on the border between two time-planes, and Perry Rhodan schemes to dupe the Robot Regent of Arkon into becoming a pawn in an interstellar war game, Atlan the Arkonide and Fellmer Lloyd, mutant, find themselves in a potentially fatal situation-