The Sun is extinguished, the cold has taken over the entire planet. Life is threatened with extinction as all light has disappeared and the darkest darkness has fallen upon humanity. Not only are Superman's powers, which depend on the yellow sun, bending, but it is the whole superhero community that is affected. An alliance of all costumed vigilantes is required. Even Lex Luthor is among them. But none of them is ready for the spectacular return of an essential character. On him depends the fate of the planet. What camp will he choose? The one of the coming dawn, or the one of eternal night? The last night?