After the tyrant of Tuglan, betrayer of his planet's people, has been destroyed, Perry Rhodan, Peace Lord of the Universe, anticipates a peaceful return to Ferrol . . . but such was not to be. Emerging from hyperspace in the mighty Stardust II, Rhodan encounters chaos of cosmic proportions: Vega, a stable sun, is unaccountably going nova!
And if the Ferrons, faced with fiery extinction, are to be saved, there is only one course open to Rhodan: he must fulfill the destiny demanded of him and meet face to face with Immortal Unknown . . .