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

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.

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.

Although the Dark Masters are defeated, it is not enough to stop the complete destruction of the Digital World and the children and their Digimon are forced to face the true mastermind of all the chaos - Apocalymon.