The combined efforts of Batman, Wonder Woman, and Superman had failed. That failure took the form of their bodies lying bloodied before Doomsday in the ruins of Gotham and Metropolis. For a week the military, through sheer willpower and numbers, was able to keep the beast contained to the the two cities. However as they too began to falter the government was left with no other choice but to push through a previously thought to be outlandish plan. The creation of a team known as Task Force X comprised primarily of the world's most dangerous criminals. Once formed this Task Force X would be deployed immediately with the sole purpose of killing Doomsday.

It has been several years since the Keybearers of Light had their final confrontation with Master Xehanort. In that time the universe experienced a respite from the Darkness that had a hold of it for over a decade. Like all things, however, this time of peace came to an end. Beings known as Eidolons emerged from deep within the Realm of Darkness with no decipherable goals other than the destruction of all worlds in the Realm of Light. To defeat these immensely powerful foes it will take the combined efforts of both the old and new generation of heroes. However, even the entirety of the forces of Light may not be able to stop the coming Darkness.