The game will be set approximately 150 years after the events of Kingdom Under Fire: The Crusaders features the return of the Human Alliance, the Dark Legion and the mysterious Encablossians whose aim is to destroy the Age of Light which has far overrun its natural course.  The Encablossians are let by the Dark Warrior Regnier who allied himself with Encabblosa while trapped in the Dark Dimension.

First trailer released

on November 13, 2008, a trailer was released to the public. It showed a new character wielding a large sword and also being able to shoot guns. The number of units seem to be in-game and number in the estimated thousands. "Wyverns" were also shown but this time it seems you will have the option to directly control them. Another interesting aspect of the trailer is the fact that archers were seen on top of a castle wall, possible hinting at castle sieges. Finally, near the end of the trailer, a large creature was shown stomping through the battlefield and crushing units under it's feet. This could possible be a new unit or a successor to the "mammoth" in the original game. There were no details of a multi-player mode, which was a very large aspect of the the original.