Throughout history, beings of superior ability have existed and become legend. Some were revered as gods, some were evil, and some were only seen as extraordinary people. But they were all Super-Powered Individuals, aka "SPIs."
With the era of mass communications, such individuals disappeared from human history. The world was filled with normal people ("Norms") going about their daily lives. But this was a cover-up perpetrated by one SPI of extraordinary ability: Dr. Anonymous. With his unfathomable power to undo any public exposure of SPIs, he managed to keep them a secret in the modern world.
Until the day he disappeared.