A few years after the adventures of the Chosen Children in the Digital World, a new batch of Chosen Children are summoned to save the Digital World. An evil ruler known as the Digimon Kaiser, or Digimon Emperor, is forcing the Digital World's Digimon into enslavement. The new group of Chosen Children, with the help of their Digimon, then begin a journey to stop the evil Digimon Emperor.

This movie takes place after the Adventure series ends. It begins when a new Digimon Egg is found on the internet, and manages to penetrate into almost every computer system in Japan. When the egg hatches, it's identified as a new kind of Digimon, a Virus-type. It sustains itself by eating data from various system, and starts wreaking havok in Japan. As it consumes more and more data, it continues to evolve. And Taichi and Koushiro decide it's time to stop it. 
They're off, sending Agumon and Tentomon through the internet to fight off this new enemy. But, with the Virus controlling systems like the American military, all too soon, this digital menace may become all too real. Calling in the help of Yamato and Takeru, they hope that they can stop what's already begun, and maybe save this world a second time. 
(Source: AniDB)

After the events of 02, everything is finally getting back to normal. That is, until a strangely familiar icon starts showing up on computer systems around the Japan. And not just computer systems... TVs, mobile phones, video games; anything with a screen with online capabilities. And this icon seems to be looking for somone... Yagami Taichi, and Ishida Yamato, who defeated it several years before. Yes, it turns out that this jellyfish digimon is in fact Diablomon, the Virus-type Digimon that was defeated in the second movie. But this time, he's learned to make himself physical, and is sending thousands of copies of himself into the real world. 
Koushiro and Ken devise a plan to rid the world of the virus once and for all, but it'll take the help of all the Destined, past and present. Once again, it's a race against time to put a stop to Diablomon's plot... but even that is cloaked in shadow. 
Will the revival of Omagamon be enough to stop Diablomon a second time, or will the millions of copies prove enough of a power boost to shrug off the "Digimon Champion of Justice"? Of course, he hasn't seen the new breed of Chosen, nor the new techniques. It's a fight to the finish, with the destruction of Tokyo resting on the line. 
(Source: AniDB)

Years after a young boy in America loses one of his Digimon friends, an evil viral Digimon successfully kidnaps the original Chosen Children. Their younger friends must race against time with their Digimon partners to discover the source of this new menace, and perhaps solve a years-old mystery.
 
(Source: Anime News Network)

Continuation of the Digimon Xros Wars series featuring Taiki Kudou in a new world with new supporting characters. The plot revolves around a secret hidden in the gap between the real and digital worlds, with Tagiru Akashi holding the key to the story.

Three years after the defeat of Apocalymon, dark powers begin to rise again in the DigiWorld. The 'Digimon Emperor,' a human boy, is on a campaign to enslave all Digimon and a new team of warriors must come together to restore peace. 
(Source: Tokyopop)

It’s 2012, and ten years have passed since the adventure in the Digital World. Daisuke Motomiya is now twenty, and he and the rest of the DigiDestined seem to be changing bit by bit in terms of appearance and lifestyle. Then one day, a giant Digitama suddenly appears in the sky over Tokyo Tower. Daisuke and the others encounter a mysterious young man named Lui Ohwada, who informs them that he’s the first ever DigiDestined in the world… 

(Source: Toei Animation)

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