T.K. discovers his Crest of Hope and a cave with Digi-code. Izzy receives an e-mail from Datamon asking for help from within Etemon's headquarters.
The group is attacked by a Kuwagamon and Tai fails to digivolve Agumon. Piximon intervenes, saves them, and offers training at his facility.
The group reunites and is attacked by Leomon. After Leomon is defeated, he explains the prophecies of the "DigiDestined." The group returns to Infinity Mountain for a final showdown with Devimon.
The kids stumble upon a factory where they find an Andromon in trouble. After they help him he attacks them. Izzy discovers coding, which he uses to digivolve Tentomon into Kabuterimon.
Tai and Matt argue whether they should climb Infinity Mountain. Joe and Gomamon decide to climb the mountain by themselves. While on the mountain, they are attacked by a Unimon.
Tai and Koromon meet with Kari in Tokyo. They discover that Digimon are appearing in the Real World and decide they must go back to the Digital World to help their friends.
The kids run away from a Monochromon battle. They come across a trolley car on a small island and decide to spend the night in it, until they are attacked by a Seadramon.
The kids meet the ruler of File Island, Devimon, the controller of the Black Gears. He, Ogremon and a possessed Leomon, attack the kids who manage to escape, but Devimon breaks File Island into multiple, smaller islands and separates the kids onto them.
Tai manages to rescue Sora. Datamon pulls himself and Etemon directly into the Dark Network. When Etemon reappears, Greymon digivolves into MetalGreymon to fight him.
T.K. and Patamon end up in Primary Village, the place where all Digimon are born. Mistaken for intruders, they are confronted by Elecmon, the guardian of the baby Digimon.
Gennai urges the group to travel to Server to defeat another enemy. Gennai also tells about Crests that will allow Digimon to digivolve further. The kids build a raft and leave File Island and are taken by Whamon to where the Crests are hidden.