The war's neutral ending? Before following the final plan of the chief that called you, go find Thane (in the tavern or the bull tribe). Then, if you have bought the emblem in the demon city auction, you can enter the painting in the bull temple to meet the dragon (enter 2-3 times if you have not met him yet), this will start a cutscene where you must not stop Thane, which unlocks the final spot on the map.
