The superheroes of Arcadia City play the daily game of destroying earth's villains. That is, until they are forced to give up their unique powers to save the world, instantly transforming them from the marvelous to the mundane. A Once Crowded Sky is the story of how these once-magical figures learn to live without their powers. One such superhero, The Soldier of Freedom, has no problem letting go of his past. But when a new threat blasts through Arcadia, he reenlists in the next great war, without his once-amazing abilities. Forced to team up with PenUltimate, the only superhero left with powers, Soldier must face his mortal fears to once again save the world.