Gennai finds a prophecy that could help the kids defeat Myotismon once and for all and restore both worlds. After the kids finally figure out what the prophecy means, they quickly figure out that parts of it are coming true. Bats appear in the sky, the people of Odaiba chant Myotismon's name, and Myotismon returns to his "True" form. Gatomon digivolves into Angewomon. This would make the last part of the Prophecy come true, Angels shoot arrows of light. Angemon and Angewomon shoot arrows at Tai and Matt, this makes Agumon and Gabumon Warp-Digivolve into their ultimate levels.

The DigiDestined decide to remain in the Digital World until they locate Ken's base, with Tai, Matt, and Izzy on a camping trip with Matt's dad as a cover story for their trip. Yolei's recklessness causes Hawkmon to be hurt. Kari and Gatomon stay behind with her. Meanwhile, Ken works on creating a digimon named Kimeramon.

Tai goes to find his parents and to free the people at the convention center. Izzy receives an email from Gennai telling him how to set up a program on his computer that will stop the evil digimon from finding them. This program ends up saving Tai and his parents. MegaSeadramon attacks Joe and T.K., but Ikkakumon digivolves into Zudomon and defeats the monster. They find Wizardmon in the water with the eighth child's crest. Phantomon shows up and calls two other digimon to attack Sora and Matt. Kari thinks that if she gives herself up to Myotismon, Phantomon will leave them alone, so she gives herself up and Phantomon carries her off.

Both the old and new DigiDestined gather to celebrate the anniversary of the day they first went to the Digital World, but the TV Network has problems with their cameras and claim there is a ghost haunting the TV System. All the DigiDestined discover the ghost is really Wizardmon. Wizardmon tells them a cryptic message before vanishing.

Gatomon is watching Kari from the roof of a nearby building, she still isn't sure if Kari is the eighth child or not. Wizardmon finds the eighth digivice in the crows nest. DemiDevimon shows up with Wizardmon and ask what he has found. Wizardmon says that he has found nothing and then takes the digivice to Gatomon. With the digivice, Gatomon suddenly remembers that she has been looking for Kari all of her life. Agumon sees Kari talking to Gatomon and attacks her, not knowing that she and Kari know each other. Agumon's attack is a miss, and Gatomon protects Kari from the blast. Gatomon then reveals to Tai and Kari that she is Kari's digimon and Kari is the eighth digidestined. Myotismon shows up and takes Gatomon away, he knows Gatomon is good and may be able to help him find that eighth child. If he only knew how close he was.

A MegaSeadramon gets the DigiDestined stuck under an oil platform. Cody admits to being afraid of water, so the others force Cody to get help to overcome his fear. He finds Joe, and they come back to save the rest of the group, who found the Digi-Egg of Reliability, Cody's second Digi-Egg. Cody can't accept the egg because he lied to his grandfather. But thanks to a pep talk from Joe about some lies that can be helpful, Cody overcomes his self doubt and ends up using the Egg. At the end, Submarimon gives Cody a tour of the sea.

Tai and the others are looking for the Shibaura area of the city, the search is still on before Myotismon finds the eighth child. Gatomon finds Kari in the park and thinks that she is the eighth child because she did know who Agumon was. Mimi and Sora decide to look for the eighth child in a tower, but once up in the tower, they are attacked by SkullMeramon. Agumon digivolves into Greymon and then to MetalGreymon before he finally is able to beat SkullMeramon.

The DigiDestined travel to a town out of the Japanese Edo period. While fleeing the controlled Floramon and Mushroomon, they meet the ruler, ShogunGekomon. Shortly after, Ninjamon puts a spiral on ShogunGekomon and the DigiDestined must stop the rampaging digimon.

The DigiDestined have a series of misadventures trying to get back to their homes in Odaiba. Eventually, they end up getting a ride from Sora's cousin, Duane. Later, Duane accidentally pushes Izzy off a bridge. Gesomon attacks and is defeated by Ikkakumon.

The new DigiDestined eat at a diner. The owner of the shop, Digitamamon, becomes angry because they do not have any money. Michael and Mimi come into the diner and pay the bill. Later, Digitamamon ends up controlled by a Dark Spiral and hurts Mimi. Yolei activates the Digi-Egg of Sincerity (after finally giving Digitamamon the benefit of the doubt and promising to be sincere) to free the ultimate-level.

The group travels to Gennai's home where he unravels some secrets about the Digital World. When the kids return to the castle to open the gate, they battle with Dokugumon. Even though the castle is destroyed in the fight, they still manage to open the gateway.

Kari is dragged into a world that is neither the real world nor the Digital World. T.K., Gatomon, and Patamon follow her, and together they are able to defeat Airdramon and destroy the Control Spire. However, the Digimon that brought Kari into their world warn her that their master will later come for her.

The two groups reunite. Sora tells them about the meanings of each of their Crests and how DemiDevimon told her that her life was loveless and thus her Crest would never glow. Myotismon appears and easily defeats the Digimon. An injured Biyomon goes to help them and Sora's concern and love causes her Crest to glow. Birdramon digivolves into Garudamon and helps the group escape.

Biyomon goes missing and the teams ends up in a town straight out of a cowboy film. Starmon, under the control of Ken, puts the DigiDestined in jail, where they find the captured rookie. The girls of the group are promptly freed by Deputymon to go and play cards with him. Soon after, though, the boys manage to break out and destroy the Control Spire.

Izzy is trapped in Vademon's pocket dimension and robbed of his curiosity. Tentomon eventually reverts back to Pabumon, but manages to snap Izzy out of his trance. DemiDevimon attempts to buy Izzy's Crest from Vademon and, in the confusion, Izzy recovers his Crest and his curiosity. Kabuterimon then digivolves into MegaKabuterimon and defeats Vademon.

Just after finding a new Digi-Egg, the DigiDestined are attacked by Flymon and MetalGreymon, under the control of the Emperor's improved Dark Spiral. Davis eventually manage to activate the egg (after confirming his friendship to Veemon). Veemon armor digivolves to Raidramon and destroys the spiral.