Superman, aka Kal-El, from the planet Krypton, was jettisoned to Earth by his father, Jor-El, just moments before its destruction. He was found by a childless, Kansas couple who adopted and raised him under the name of Clark Kent. They passed on to Clark the moral values of human kind. His superhuman abilities began to show at an early age. When he matured, he took on the role of protector of humanity.
A mild-mannered reporter for the Daily Planet and on again-off again, love interest of co-worker, Lois Lane, Kent became supportive of the underdog. Stepping into telephone booths to change from his work suit into his primary colored, super crime fighting costume, he protected the weak and the righteous. And, although, he could blurringly spin villainous predators into silly putty, being an alien endowed with the magnificent power of finality and all, he chose to uphold human moral and social codes.
And the day became as if it were night. A chill noir fell over the western world and spread, like fog, from California to Miami. Hades, Lord of the Underworld, lurked under the crusty skirt of Mother Earth. He sucked, like a gopher in a garden filled with tasty, tender greens, telephone booths from her surface. A grim realization settled in among mortal top dwellers. Super Power, absolute, was scurrilously being stolen by inhabitants of lower realms, the Netherworld.
The last of the telephone booths rapidly disappeared from existence. The codexes of information they once held, known as telephone books, became even rarer. Superman was rendered impotent by the demise of his Bell tower of power. He was no longer able to shed his wool, wide-lapeled, Zoot suit jacket in favor of his flying cape, magic Speedo and jumping tights. His dabber downed, he joined the ranks of mortals.
In this world, man, forever changed, must now take responsibility for his own future. No more relying on immortal, super beings to right grievous wrongs. The great shift came, one subterranean-sucked telephone booth at a time. One mortal at a time, the era of the Power of Man began.