The Children travel on a Trailmon when they suddenly land on The Wandering Island. Takuya, Tomoki, Junpei, Bokomon and Neemon awake on the stairs and meet Kotemon. Suddenly Beast type Digimon, led by Hippo Gryphomon, attacked Human type Digimon, led by d'Arcmon, by tanks. Takuya and others got over the battle and went to the place where there were Kotemon's friends. At the same time, Bearmon helps Kouji and Izumi. The children unite again. The Digimon explained that Human Digimon and Beast Digimon of the island opposed to each other. They showed the children to the cave where there was huge wall painting of Ornismon, an ancient Digimon, on the wall. Ancient Greymon and Ancient Garurumon were painted on both sides of Ornismon.