There are 4 armies in the Digital World fighting for dominance: Xros Heart, Bleu Flare, Twilight and Bagura Army.
Three of the armies are led by humans while the Bagura Armi is strictly led by Digimon.
The motivation of the war is to find all of the Code Crowns, fragments that have been scattered into the Digital World.
Whoever gathers all the fragments together to recreate the original Crown Code will be able to control the whole Digital World to his own will.
Who will become the Digimon King and then rule the Digital World?
© Akiyoshi Hongo, Toei Animation