In this movie, that takes place three months after MaloMyotismon's defeat, 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.
| Directing | Hiroyuki Kakudou | Director |
| Writing | Reiko Yoshida | Writer |
| Visual Effects | Shin Matsuo | Key Animation |
| Visual Effects | Hiroyuki Okuno | Key Animation |
| Visual Effects | Hideki Hamasu | Key Animation |
| Visual Effects | Hitoshi Saiku | Key Animation |
| Visual Effects | Junya Matsumoto | Key Animation |
| Visual Effects | Tsutomu Suzuki | Key Animation |
| Visual Effects | Yumiko Ishii | Key Animation |
| Visual Effects | Yukako Tsuzuki | Key Animation |
| Visual Effects | Takenori Tsukuma | Key Animation |
| Visual Effects | Akira Matsushima | Key Animation |
| Visual Effects | Yuuji Ikeda | Key Animation |
| Visual Effects | Katsuichi Nakayama | Key Animation |
| Visual Effects | Koji Watanabe | Key Animation |
| Visual Effects | Hideki Ito | Key Animation |
| Visual Effects | Haruo Sotozaki | Key Animation |
| Visual Effects | Hideki Hashimoto | Key Animation |
| Visual Effects | Ritsuko Watanabe | Key Animation |
| Visual Effects | Keiko Motoya | Key Animation |
| Visual Effects | Shingo Ishikawa | Key Animation |
| Visual Effects | Sushio | Key Animation |
| Visual Effects | Soichiro Matsuda | Key Animation |
| Visual Effects | Keiko Yamamoto | Key Animation |
| Visual Effects | Shuichi Kaneko | Key Animation |
| Visual Effects | Masahiro Andoh | Key Animation |
| Visual Effects | Kanta Kamei | Animation Director |
| Visual Effects | Kazuto Nakazawa | Animation Director |
| Visual Effects | Hideki Takahashi | Key Animation |
