Following the events of 02, things have finally returned to normalcy, that is, until a strangely familiar symbol begins appearing on computer systems throughout Japan. Not only on computers, but also on televisions, cell phones, video games, and any device with online capabilities. This symbol appears to be searching for someone, Yagami Taichi and Ishida Yamato, the duo who had defeated it several years ago. As it turns out, the jellyfish digimon is none other than Diablomon, the Virus-type Digimon who was vanquished in the second movie. However, this time, he has obtained the ability to manifest himself physically and has dispatched thousands of copies into the real world. Koushiro and Ken come up with a plan to eliminate the virus for good, but it requires the assistance of all the Destined, past and present. It's another race against time to foil Diablomon's plans, yet even that remains shrouded in mystery. Will the resurrection of Omagamon be sufficient to defeat Diablomon once again, or will the multitude of copies be a significant power boost that can withstand the "Digimon Champion of Justice"? He has yet to witness the new generation of Chosen and their innovative techniques. It's a showdown to the finish, and the future of Tokyo hangs in the balance.