An older Clark Kent (Jon Hamm) once known as Superman who is now retired from his old life and there are so many superheroes in the future they're in every corner of the world and Superman just feels like he doesn't need to be one anymore, now with the new generation of superheroes in Metropolis who are now all just being such a-holes they're doing their job as a hero for celebrity fame money politics or being regulated by corrupt governments and they just do things out of self-interest for their country as opposed to for the people when things gets so bad, that Superman comes out of retirement and must show all of the newcomers in the world what it meant to be a superhero that bright light.