Superman: Earth One, book 3
Joe Michael Straczynski et Ardian Syaf2015

Who will save Superman?
Earth has turned its back, leaving Clark Kent at the mercy of the Luthors and Zod.
Invulnerable? Maybe.

Alone? Definitely.

In his brief stint as a costumed superhero, Clark Kent has run a gauntlet of the worlds most deadly and monstrous villains. However, his most dire threat may come from two powerless human beings. Who both just happen to be the two smartest people on the planet.

Lex and Alexandra Luthor have been paid very well to find a way to cancel Superman's powers. The man who destroyed Krypton has been welcomed and invited by the world's governements to complete his mission with the murder of Kal-El.

Betrayed, at his most vulnerable, there is no place to hide and no one he can trust. The newcomer from Smallville who would be Superman face his greatest challenge yet as the world he fought to save sells him out.