What if Superman never existed? Set two generations before the destruction of Superman's home planet, KRYPTON follows Seg-El, the legendary Man of Steel's grandfather, as a young man who fights to save his home planet from destruction. Season Two brings us back to a changed Kandor, locked in a battle over its freedom and its future. General Dru-Zod is now in control. He's on a ruthless mission to rebuild Krypton according to his ideals and to secure its future by conquering the universe.