Daisuke, Miyako, Iori, Takeru Takashi, Hikari, and Ken must reconcile new responsibilities with their Digimon partners. But Rui Owada, a mysterious young man, appears claiming to be the first human to partner with a Digimon.

Long ago, a war broke out in Japan that pitted Kantou against Kansai and divided the country. Kansai became dependent on Kantou, but slowly the police and government began losing control of Kansai to criminals known as Akudama.