The kids come across a beach with numerous phone booths, but none of them seem to work.

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.

Tai and Agumon land on a snow-covered island and are forced to defeat a Frigimon.

While at camp, Tai, Matt, Sora, Izzy, Mimi, Joe, and T.K. come across seven Digivices and are transported to a strange Digital World where they make friends with creatures called Digimon who claim to be their chosen partners.

The kids come to a Yokomon village to rest for the evening until a Meramon attacks.

While escaping the Numemon who attacked the group in the sewers on their way out of the factory, the kids are split up and Mimi ends up in Toy Town.

As the Digimon fight BlackWarGreymon, the DigiDestined attempt to move the Destiny Stone with their D-3s under Davis' advice. This summons Azulongmon, who had appeared when the Destiny Stones were destroyed. BlackWarGreymon is defeated by Azulongmon and leaves to look for his life's purpose. Azulongmon explains to the DigiDestined about Control Spires and Armor Digivolution, while warning them that Arukenimon is not their true enemy.

The kids stumble upon a factory where they find an Andromon in trouble.

The kids meet the ruler of File Island, Devimon, the controller of the Black Gears.

After an encounter with Ogremon at sea, Joe and Gomamon find themselves on an island with Sora and Biyomon before they are captured by a cult of Bakemon intent on eating them. Gomamon and Biyomon manage to escape and Digivolve to fight Lord Bakemon. Joe uses a Buddhist mantra to weaken Lord Bakemon. After Birdramon and Ikkakumon destroy Lord Bakemon, they ride across the sea to find their friends.

T.K. and Patamon arrive in Primary Village, the place where all Digimon are born. When the baby Digimon start to cry, T.K. and Patamon are confronted by Primary Village's caretaker, Elecmon, which they settle with a tug-o-war match. Patamon wins and earns Elecmon's respect and trust, as he allows the both of them to stay. Meanwhile, Devimon sends Leomon after T.K, considering him a threat.

Izzy falls into Vademon's pocket dimension and is forced to give up his curiosity. Tentomon snaps Izzy out of his trance, but by that time, DemiDevimon tries to buy Izzy's Crest from Vademon. In the confusion, Izzy recovers his Crest and his curiosity as he causes Kabuterimon to Digivolve into MegaKabuterimon, defeating Vademon. Izzy and Motimon are found by Matt and T.K. soon after.

Tai and Joe find Mimi with the Gekomon and Otamamon, who treat her like a princess hoping that her singing voice will awaken ShogunGekomon. However, Mimi becomes too consumed in being pampered to give it up and imprisons Tai and the others after they attempt to record her voice. After a nightmare, Mimi apologizes and awakens ShogunGekomon. ShogunGekomon, however, attacks Mimi, causing MetalGreymon to defeat him.

On Christmas Eve, the younger DigiDestined hold a party at Ken's apartment while the older DigiDestined attend Matt's concert. Digimon suddenly arrive in the Real World interrupt the concert, forcing the DigiDestined to send them back into the Digital World. The DigiDestined wake up the next day to find that Control Spires and Digimon are appearing worldwide.

As Davis joins up with Mimi and the American DigiDestined, Kari and Izzy receive help from the Poi Brothers in Hong Kong.

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.

Mimi and Palmon escape Sukamon and Chuumon and cross over to the next island where Izzy and Tentomon landed, but end up getting lost in a labyrinth and attacked by Centarumon.

T.K. is attacked in Primary Village by Leomon and Ogremon, until Tai, Matt, Izzy, Mimi, and their Digimon arrive to his rescue, where they use their Digivices to free Leomon from the Black Gears. Leomon later explains the prophecy that the children, as "DigiDestined", are to the saviors of the Digital World. The group fights Devimon, who absorbs Black Gears and Ogremon. Devimon defeats the DigiDestined, even when Joe and Sora rejoin them. Patamon Digivolves into Angemon when T.K. is in danger and sacrifices himself to defeat Devimon. Angemon's data reconstitutes into a DigiEgg, and File Island begins to reform itself. The DigiDestined are then suddenly contacted by Gennai.

Matt finds Joe working at Digitamamon's diner to pay off his debt and agrees to help. DemiDevimon bribes Digitamamon to keep them while setting off accidents that makes Matt question Joe. However, once Digitamamon's scheme is exposed, they battle him with Tai and T.K. Joe sacrifices himself to save T.K., leading Matt to see him as a true friend and allowing Garurumon to Digivolve into WereGarurumon. After Digitamamon's defeat, the group splits up and continue their search for the remaining DigiDestined.

As Davis and Ken fight Triceramon in Tamachi, the DigiDestined receive one of Azulongmon's Digicores from a rejuvenated Gennai, which results in not only restoring the original partner Digimons' ability to reach ultimate level, but also allows Paildramon Digivolve into Imperialdramon. The DigiDestined are instructed to meet Gennai's aides and the international DigiDestined worldwide to send the wild Digimon back into the Digital World.

Ken and Matt help out a Mexican DigiDestined, while Sora and Yolei helped those in Russia and Siberia. Yolei and Sora are successful in Russia, but they are rescued from an attack by Imperialdramon. The DigiDestined return home in time for Christmas, but while they were traveling, Arukenimon and Mummymon have been gathering children.

On Server, the DigiDestined arrive at a Koromon village, only to find Pagumon living there. Despite the Pagumon's warm welcome, they are allied with Etemon and abduct Tokomon at night, imprisoning him with the Koromon. The DigiDestined rescue them, but Etemon uses his Dark Network to defeat them and destroy the village. The group take refuge in a cave, where Tai finds the Crest of Courage, allowing them to escape from Etemon into the desert.

Joe's tag leads the DigiDestined to a coliseum, where Etemon traps them and forces Greymon to fight another Greymon. After Joe finds the Crest of Reliability, the group escapes and Tai forces Greymon to Digivolve to his ultimate form by putting himself in harm's way. Instead, Greymon Dark Digivolves into SkullGreymon, attacking everyone before eventually reverting to a regretful Koromon.

After getting lost in the desert, the group is taken aboard a ship traveling in the desert, headed by Kokatorimon. Kokatorimon captures all the boys and petrifies their partners. Biyomon and Palmon Digivolve and defeat him, and his ship crashes into a giant cactus. Mimi finds the Crest of Sincerity on top of the cactus.

When the group is attacked, Tai and Agumon are hesitant to fight since Digivolving into SkullGreymon. Piximon rescues and trains the DigiDestined at his facility, where Tai and Agumon are stranded in a cave as the others do manual labor. At night, Matt and Izzy sneak away to find the Crest of Friendship and the Crest of Knowledge. However, they are detected by the Dark Network as Etemon sends a Tyrannomon after them. Tai and Agumon regain the courage to fight, leaving to Agumon Digivolve into Greymon and defeating Tyrannomon.