While at summer camp, seven kids come across seven Digivices and are transported to a strange digital world. In this new world they make friends with creatures that call themselves Digimon who were born to defend their world from various evil forces.

Gon Freecss discovers that the father he had always been told was dead was actually alive the whole time. Ging is a famous Hunter: an individual who has proven themself an elite member of humanity. Gon becomes determined to follow in his father's footsteps, pass the rigorous Hunter Examination.

Spring break turns into a summer war when the evil Diaboromon wreaks havoc on the internet, and Tai and Matt must achieve a new Digivolution to defeat him! Will Tai and the Digidestined save the world, and will Sora ever forgive Tai for giving her a hair clip?

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.

After the older DigiDestined are abducted by the mysterious Kokomon, the next generation of kids team up with American DigiDestined Willis to rescue them - only to discover that their enigmatic enemy has an unexpected connection to their new friend!