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-of-war match.

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.

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

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.

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 ghost-based Digimon named Bakemon intent on eating them.

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.

Joe and Tai find Mimi being treated like a princess at a palace. Sora convinces her to sing and awaken ShogunGekomom, but ShogunGekomom attacks the kids.

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

The kids arrive in a Koromon village where they are confronted by Etemon. He uses his Dark Network to prevent the Digimon from digivolving and then traps the group inside a cave where they discover their first Crest, Tai's Crest of Courage.

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.

The kids manage to escape MetalSeadramon's minion, Scorpiomon. They try to escape by sea, but are immediately stopped by MetalSeadramon.

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.

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.

Tai and Agumon return to the Digital World to find Tokomon, who reveals that everyone has split up to find them after weeks since their disappearance. Meanwhile, DemiDevimon causes a rift between T.K. and Tokomon and secretly plans on feeding T.K. amnesic mushrooms. Agumon exposes DemiDevimon, and Tokomon Digivolves into Patamon to drive DemiDevimon away.

Izzy is trapped in Vademon's pocket dimension and robbed of his curiosity. DemiDevimon attempts to buy Izzy's Crest from Vademon and, in the confusion, Izzy recovers his Crest and his curiosity.

The DigiDestined try to get back to their homes in Odaiba after missing their train stop and spending all their money on food. Eventually they end up getting a ride from Sora's cousin Duane, who later accidentally pushes Izzy off a bridge. After Ikkakumon defeats Gesomon at the ocean, he carries the DigiDestined home.

While Puppetmon orders Garbagemon to attack the DigiDestined, Matt withdraws and meets Cherrymon. Cherrymon convinces him to defeat Tai, who he claims is the source of Matt's self-doubt. Matt returns to the DigiDestined and demands Tai to fight him, while Cherrymon is killed by Puppetmon after warning him not to underestimate an advantage that the DigiDestined have over him.

Joe and Mimi rescue an injured Ogremon, while Etemon returns as MetalEtemon to take revenge on them. Meanwhile, Tai's group infiltrate Puppetmon's mansion with the help of two of his playmates, keeping Puppetmon at bay with his own cannon.

Kimeramon and Magnamon fight. Ken's base explodes, and Wormmon gives all the power he has to help Magnamon defeat Kimeramon.

Ken reminisces about his brother Sam, his digivice, an e-mail he got, and when he first went into the Digital World (despite his temporary amnesia in the real world).

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

Just as the kids are about to be destroyed by MetalSeadramon, Whamon comes to their rescue and they flee to the bottom of the ocean. However, when MetalSedramon catches up to them, a battle begins.

The DigiDestined are attacked by Tyrannomon. T.K. and Kari find the Digi-eggs of Hope and Light, allowing Patamon and Gatomon to Armor Digivolve into Pegasusmon and Nefertimon to save their friends and free Tyrannomon.