The Empire has fallen, the League's unity is shattered, darkness gathers in strength as the world becomes more and more savage. The only hope Earth has is for one of their own to rise like a Bat Outta Hell to rally the League once more under the banner of Justice. Burdened with a dark glory he must press on to save the world. For beyond the Savage there is the God of Evil.

I couldn't get the idea of out my head and just went with it. Set during Gotham's timeline when Bruce and Clark are around the same age.