Digimon Adventure: Our War Game! (デジモンアドベンチャー ぼくらのウォーゲーム！, Dejimon Adobenchā Bokura no Wō Gēmu!) is the second Digimon movie and is the second movie of Digimon Adventure. It premiered on March 4, 2000 alongside ONE PIECE (ワンピース, Wan Pīsu) as part of the 2000 Spring Toei Anime Fair.
||Agumon, Tentomon, Piyomon, Gabumon, Palmon, Gomamon, Patamon
||Tailmon, Kabuterimon, Greymon
||Metal Greymon, Atlur Kabuterimon
||Metal Garurumon, War Greymon
A virus DigiTama has appeared on the net and hatches into a Kuramon. Koushiro and Taichi, with Gennai's help, fight the now evolved Keramon. Taichi tries to contact the others but fails to get any help. Agumon and Tentomon find and attack Keramon. Agumon and Tentomon evolve to Adult but Keramon evolves, skipping Adult and going directly to Perfect and escapes after defeating Greymon and Kabuterimon in mid-evolution. Infermon interupts the phone system, causing Taichi and Koushiro to lose Internet connection. Thankfully they can use a message leaving system allowing Taichi to contact Yamato. Yamato and Takeru searche for a place with a computer. Taichi, Koushiro, Takeru and Yamato get onto the Internet, sending Patamon and Gabumon to aid Tentomon and Agumon. Agumon and Gabumon warp evolve and start to fight. When Patamon tries to evolve, Infermon evolves into Diablomon and knocks Patamon and Tentomon out. Taichi hits the computer causing it to hang and they have to reboot it. When they get back on, they find their Digimon in really bad shape. Diablomon starts a countdown that shows how much time they have left before two missiles fired by the US hit, due to Diablomon's hacking. Diablomon starts to clone himself, creating an intimidating army of Diablomon. War Greymon and Metal Garurumon start searching for Diablomon, but when they try to fight the clones, the Ultimates are no match. Taichi and Yamato miraculously go into the monitor and give power to their Digimon who fuse into a new powerful Digimon, Omegamon. Omegamon destroys all the clones but the real Diablomon is too fast. Koushiro decides to forward all of the emails that were slowing the Ultimate Digimon down to Diablomon who literally freezes, allowing Omegamon to impale him with his sword, stopping the missiles.