Notes:

http://dc.wikia.com/wiki/Superman/Batman_Vol_1_24
Superman/Batman Vol 1: 24
Superwoman Batwoman
Superman frees Darkseid from the Source Wall.

Batman appears on gender reversed Earth and encounters Batwoman, Superwoman, and Superlad. Bizarro has somehow recruited various versions of Supergirl.

Everyone is eventually transported to a mysterious location that resembles a three ring circus. After killing Batzarro, The Joker reveals his plan to kill "every Batman there ever was or there ever will be."