Digimon Adventure: Our War Game!

When a deadly virus Digimon causes mass havoc on the Internet, it's left up to just a few of the DigiDestined to stop him, and save Tokyo from an incoming missile attack.

Synopsis
Taking place after a year following the battle of Apocalymon. The are on summer vacation in the real world, Koushiro "Izzy" Izumi discovers a virus on the internet infecting a. At the same time, Taichi "Tai" Kamiya is trying to apologize to Sora Takenouchi for getting her a hairclip for her birthday in an e-mail. Izzy arrives at Tai's house out of breath, telling Tai about the newly-hatched Digimon. Tai and Izzy use Tai's dad's computer and monitor the Digimon until Gennai appears in a transmission from the Digital World. He sends and  to help stop the corrupted Digimon. They put up a good fight until warp digivolves to  and defeats them.

Tai tries furiously to contact and alert the rest using a phone, but when Infermon begins to dial as many numbers as can be pulled up over the PSTN, Tai's Internet connection is disconnected. Faced with this dilemma, Tai sees a television report on suggestions for the use of the voice mail system as an alternative means of communication over phone lines; using this method, he ends up getting only Yamato "Matt" Ishida and his brother Takeru "T.K." Takaishi, who are on vacation at their grandmother's house in Shimane. They find a computer in a local shop, and ask one of the employees for permission to use it; taking pity, he takes the two and his computer to a barber shop with an Internet connection and upload and  onto the net. Infermon digivolves to after Agumon and Gabumon warp digivolve to  and  but then they slow down because of the massive amount of e-mails being sent to Tai and Izzy. Tai slaps the computer and freezes it leaving WarGreymon frozen and defeated.

Diaboromon then starts multiplying and sets up a timer for 10 minutes as he forces the Pentagon to launch a nuclear missile at Tai's neighborhood. WarGreymon and MetalGarurumon wake up and race to defeat Diaboromon, only to find over a million copies of him. Every single copy fires and blasts them until they lie defeated. Tai and Matt mysteriously enter their computers and talk to their Digimon. WarGreymon and MetalGarurumon DNA digivolve to who easily defeats all but one Diaboromon. At one minute to go, Diaboromon is still too fast for them to hit, but then Izzy forwards him the e-mails, slowing him like it did to the other Digimon. At the very last second, Diaboromon is destroyed, disabling the missile.

Digivolutions
(Number indicates order of occurrence.)

Quotes
"I can't believe Sora's gonna read my letter. Wait a minute, unable to deliver? I can't believe Sora's not gonna read my letter!"
 * —Tai, frustrated with his computer.

"Looks like a cross between a jellyfish and a contact lens."
 * —Tai ' s intial observation of Kuramon.

"So what? I'm in junior high school, and I take classes at junior high school!"
 * —Tai, obviously jealous of Willis.

Tai: "I wish Agumon was here to help us!" Agumon: "Tai!" Tai: "I can almost hear him now." Agumon: "You can hear me now!" Tai: "It's like he was here." Agumon: "I am here!"
 * —Tai, failing to notice Agumon on the computer screen.

"He's the only kid I know who volunteers for summer school!"
 * —Tai ' s irritation at Joe not being available due to a test.

Tai: "This is Tai." Grandma: "You're selling ties?" Tai: "No, my name is Tai. I'm looking for Matt or T.K." Grandma: "What a coincidence! Those are my grandkids' names." Tai: "That's great! Are they there? Right now? Can I talk to them?" Grandma: "I love to talk to them, too. They're here visiting." Tai: "Please! I need to speak to them right away!" Grandma: "Okay, I'll tell them. Kids! [hangs up]" Tai: "I... can't... take... this!"
 * —Tai failing to communicate with Matt and T.K.'s grandmother.

Mimi: "Hi, it's Mimi. I'm so glad you called. Let's get together for lunch. Leave a very short message after the beep." Machine: "BEEP" Tai: "Mimi-" Machine: "BEEP"
 * —Tai getting cut off by Mimi ' s answering machine

Izzy: "So do I have enough of this stuff?" Mrs. Kamiya: "Beats me. It's the first time I've used flour to bake a cake."
 * —Izzy helps Tai's mom in the kitchen.

"Stupid Tai!"
 * —Sora throughout the film, after Tai gave her a hairclip as a gift.

"Thank you for visiting *MEOW*.com"
 * —Tai's computer when the family cat, Miko, is found messing about with it.

"Does this information superhighway have a rest stop? I've gotta go potty!"
 * —Tentomon chooses an inappropriate moment.

"So this is what the Internet looks like. They need new wallpaper."
 * —Agumon, after entering the Internet with Tentomon.

Agumon: "Let's sneak up on him quietly." Tentomon: "SUPER SHOCKER!" Agumon: "That's quietly?"
 * —Tentomon fails to heed Agumon's advice.

Agumon: "Don't take me out, coach!" Tentomon: "I'm fine. Just one question: who's Tentomon?"
 * —Agumon and Tentomon after being blasted by Infermon.

"Talk about speed dialing!"
 * —Kari commenting on Infermon's use of the phone company.

"Phones have gone dead worldwide. If your telephone is dead, please call your phone company."
 * —The TV announcer giving out some not-so-helpful advice on the situation.

"Oh, I gotta go. Grandma fell asleep on T.K. again."
 * —Matt trying to respond to Tai's voicemail.

"I have a question, too. Why are you still drinking that junk?!"
 * —Tai on Izzy's enjoyment of the beef jerky shake.

"They're not weird. They're my best friends! ...considering this is the only computer in town!"
 * —Matt on the people in the barbershop.

"I hate to tell you I told you so, but... I told you so!"
 * —Tai after Izzy starts reacting to the beef jerky shakes.

"You two sure picked a lousy time to take a lunch break."
 * —Matt after Tai manages to crash the computer..

"You didn't have to read it so well."
 * —Tai after hearing Izzy read the audience's negative comments and thinking they were coming from him.

Izzy: "Here's another one! 'Be home by 6:00!' Oh, wait, that's from my mom." Tai: "I'm trying to save the world and you're reading fan mail!"
 * —Izzy reading e-mails, much to Tai ' s aggravation.

Izzy: "Part WarGreymon..." T.K.: "Part MetalGarurumon..." Izzy: "They digivolved together to become—" Omnimon: "Omnimon!"
 * —The very first DNA Digivolution

"You've! Got! Mail!"
 * —Izzy forwards all the e-mails to Diaboromon.

"Connection...terminated.........Willis"
 * —Diaboromon's final words.

Izzy: "I'm... about... to barf..." Tai: "Wait 'til you try the cake."
 * —Tai isn't going to let Izzy forget.