I have the story. Post Apocalyptic hero, the last hero in a thermonuclear War that nearly sterilized the United States. All of the heroes are dead. All except for one. Being the final, U.S. hero allows me to have my superhero exhibit the strange power all of us have. An every man doing some very fantastic things (making himself younger, fly, create objects seemingly out of nothing [his forcefield counts as such]: all of which is fully explained by Science and we ourselves are fully capable of). But he is alone. No one to help him, no one to upstage.
He is alone. A lone hero dispensing justice in a beleaguered, shattered America seeking to rebuild itself after the Apocalypse.
Great story. And a great story needs great storytelling.