The castaway on the interstellar asteroid on the fringes of space's forbidden region proved to be disaster to his rescuers and an enigma to the leaders of Earth. Yet, at whatever cost, he was a puzzle that had to be solved, for he seemed to be the single being that was immune to the growing storm of disintegration emanating from the Ursa Major constellation. It would be up to this mind-blocked stranger, Ilmar, to solve his own mystery - but the further he penetrated into his own time-space pattern, the more he realized that he was the living embodiment of an ancient legend pointing to a date with destiny beyond the frontiers of known science.