The DigiDestined go up against Diaboromon again. Tai and Matt head back to the Internet to deal with him with Omnimon, while the younger Chosen Children go to deal with the rampage of a swarm of Kuramon (Diaboromon's Fresh form). With the help of Angemon and Angewomon (with T.K. and Kari), Omnimon was able to destroy Diaboromon again, but it turned out to be a trap, as his destruction allowed many more Kuramon to go to the Real World. Things go out of control when the Kuramon in the Real World merge to create a Mega level called Armageddemon, an alternate Mega in Diaboromon's evolutionary line. It is so powerful that neither Omnimon nor Imperialdramon were able to defeat it on their own.

After the older DigiDestined are abducted by the mysterious Kokomon, the next generation of kids team up with American DigiDestined Willis to rescue them - only to discover that their enigmatic enemy has an unexpected connection to their new friend!

As another round of preliminary tests approach for Keitarō, so does Christmas. And as the first Christmas of the millennium, there is a rumor that if one confesses his love on this special eve it will come true. Keitarō has decided what he needs to do on this Christmas eve. But being a retaker, can he afford taking attention away from the tests on the same day?

The tests have come, and Keitaro can only hope to succeed. However, in the final stretch, he fails miserably and daydreams through the test. Assuming that he has failed, he runs away, so the rest of the cast hunts him down on a remote desert island to bring him back.

Ellile is a knight-in-training in the Kingdom of Fredbarn in the Neverland World. He and Princess Roji are secretly in love, and plan to marry. Lifile, the head of the knights, finds out, and tells Ellile that he's not strong enough to protect Roji, let alone the Kingdom. Ellile becomes frustrated, and contemplates what to do.

The Digital World is becoming so overpopulated that the super computer Yggdrasill who governs the Digital World can no longer handle it. Its solution is Project Ark: to wipe out most of inhabitants with the X Program. Yggdrasill chooses a very small percentage to be moved to a new Digital World and then proceeds to destroy the old one. Some Digimon who were not chosen survive anyway, and they move to the new world with a rare gift known as the X Antibody; this antibody changes their appearance and makes them more powerful, while at the same time making them immune to the X Program. No longer in control, Yggdrasill uses the Royal Knights to destroy these X-Digimon, who are outcasts in the new Digital World.

The Tokyo Bay N.K. performance of Love Live Hina, signaling the end of the series and features live group and solo performances by seiyuus Ueda Yuuji, Horie Yui, Asakawa Yuu , Noda Junko, Yukino Satsuki, Kurata Masayo, Kobayashi Yumiko, and Takagi Reiko. Also features a 30 minute summary of the anime.

The introductory chapter to the movie, Strong World, which depicts the events surrounding Gold Roger's execution.

In 2012, after the events of Digimon Adventure: Last Evolution Kizuna, the early adulthood DigiDestined—Daisuke, Miyako, Iori, Takeru Takashi, Hikari, and Ken—must reconcile their 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–Ukkomon. Could Rui really have been the first-ever DigiDestined?

Goro briefly returns to Japan after a triumphant campaign in the US. He is heading towards Fukuoka where he played baseball when he was a fifth grader. Having just moved into a new town, this is where Goro faced a critical point in his life.