MetalGarurumon returns and fighting alongside WarGreymon they take on Piedmon. After some tricky attacks from the evil Digimon, both Mega Digimon seem to have the upper-hand in the fight. Just as everyone else is about to Digivolve, Piedmon pulls out a white cloth and the confused DigiDestined don’t know what to think of it. He quickly throws the cloth which grows into a huge sheet that covers Tai, Matt and their Digimon. Piedmon then removes the sheets and reveals that they have disappeared, or rather been turned into into key chains. The other children try to run away while Andromon holds him off but he too gets turned into a keychain. They only way the group is able to escape is by using trapezes placed over a large chasm. The next to be turned into key chains are Joe, Izzy and their Digimon. The rest of the group falls prey to Pidmon’s evil tricks and the only ones left are T.K., Kari and Patamon. Just as Sora is being attacked, she snatches the Matt key chain from Piedmon and throws it to T.K. While the two of the remaining children try to escape up a rope, Piedmon catches up to them and Patamon Digivolves into Angemon to try to fight him off. Unfortunately he is easily defeated and Piedmon then cuts the rope, causing T.K. and Kari to fall. As they fall, T.K. clutches the keychain form of Matt and after hearing the encouraging words of his brother he is reminded that hope remains. His crest begins to glow, and Angemon digivolves into MagnaAngemon, who catches the two falling children and then delivers a single slash to Piedmon from above, causing him to fall, seemingly, to his death.
MagnaAngemon then returns every key chain into the Digimon and people they once were using his Magna Antidote ability. They think it's all over until Piedmon resurfaces with hundreds of Vilemon. Just then, Mimi and Lillymon arrive with an army of Digimon, and they, along with the groups Ulitimate form Digimon all fight back against the Vilemon. MagnaAngemon opens his Gate of Destiny which sucks in all the Vilemon, and WarGreymon and MetalGarurumon send Piedmon in as well, defeating him for good. The last remnant of Spiral Mountain then disappears and the reinforcements Mimi brought along return home. As light begins to return to the world, Izzy gets a message from Gennai telling them that the Dark Masters were never the real enemy, that the real enemy is the one who created the Dark Masters. Just then, the ground shakes, they sky grows dark and the DigiDestined soon realize that the fight is not over.