The Legend of the DigiDestined

The Legend of the DigiDestined is the thirteenth episode of both Digimon Adventure and the Digimon anime series.

Summary
As Patamon and T.K. watch over the Primary Village, Leomon appears, and chases them into the forest nearby. When Ogremon blocks their escape, all hope seems lost, until Garurumon and Matt turn up and blast Leomon away. Tai and Greymon are also nearby, and a battle begins. Leomon is powered up when several black gears are injected into him, but luckily, Kabuterimon and Togemon show, providing enough strength to defeat him. After Leomon recovers, he explains how the kids were sent to the Digital World to conquer evil, and so it becomes clear that Devimon must be defeated. However, Devimon has summoned the power of all the black gears on the island to make himself unbeatable. Soon, the final battle begins, but even when all the Digimon are in their digivolved forms, Devimon manages to brush them away. Then, when he goes for T.K. and Patamon, Patamon is forced to digivolve into Angemon, who takes the power of all the Digimon to destroy Devimon, but not without destroying himself as well. Angemon returns to the form of a Digiegg, to recover from the battle. As the group get themselves together, a hologram appears from under a nearby rock, and an mysterious man appears.