Digimon Adventure: Bokura no War Game!  

Digimon: Our War Game!, Digimon: Children's War Game!, デジモンアドベンチャー ぼくらのウォーゲーム！

The movie is set after the conclusion of the Adventure series. It commences when an unknown Digimon Egg is discovered on the internet and manages to infiltrate almost every computer system across Japan. Upon hatching, it's identified as a new type of Virus-Digimon that sustains itself by consuming data from various systems. As it grows stronger, it wreaks havoc throughout Japan. Taichi and Koushiro decide to take action and send Agumon and Tentomon through the internet to combat this new threat. However, with the Virus controlling critical systems such as those of the American military, the stakes are high, and stopping it may become a daunting task. To aid them in their mission, they call upon Yamato and Takeru, hoping to put an end to what's already transpired and potentially save the world from further harm.

Digimon Adventure: Bokura no War Game was aired in theaters as a double feature alongside the One Piece movie as part of Toeis Spring 2000 Anime fair. In the US release titled Digimon: The Movie, three of the Digimon films were edited together into one single film due to the low individual run time of them. It was released nationwide on October 6, 2000. Several heavy changes were made in this edit such as plot changes to make the story connected and a soundtrack featuring insert songs from artists such as Smash Mouth. Cumulatively, over 40 minutes was cut from the original releases. The movie was divided into three parts, which are respective of the original films.