Tai and Izzy, who are scouting the area, come across a genius inventor, Garbagemon. Izzy’s eyes sparkle as he sees the number of inventions Gargagemon has created from junk. However, an enemy Digimon suddenly attacks them.
While Matt and T.K. are looking for food, Tai and Izzy soon reach a garbage dump where they encounter Garbagemon and Chuumon, who are salvaging the various trash for technology they can use, resulting in Garbagemon explaining that he is studying the land due to the black lightning from Millenniummon causing all that trash to appear and invites them to his lab for further analysis. However, they are attacked by a Raremon that had been hiding among the trash, but leaves when it gets hungry. Back at Garbagemon's lab, he reveals that if Raremon is affected by Millenniummon's black lightning, it could be bad, before then admitting how powerless he is as he looks over the cups that used to belong to his Chuumon helpers before they became energy for Raremon, vowing to avenge them.
They attack Raremon again, but when Garbagemon tries to use his Absolute Zero Bazooka on Raremon, Millenniummon's black lightning allows Raremon to digivolve into RareRaremon. When Garbagemon explains that RareRaremon has been eating mostly oil as of late, Izzy gets an idea to use oil hardener with Gerbemon's bazooka and ice maker, along with help from MetalGreymon and MegaKabuterimon, to turn RareRaremon's body solid and immobile, and succeeds. Garbagemon is grateful afterwards, promising to continue his research over revenge, and Chuumon digivolves into Searchmon. As Garbagemon and Searchmon depart to look for their next research, Tai and Izzy head back to rejoin the other DigiDestined.
(Numbers indicate order of appearance. Bolded characters are fought by the protagonist(s), and italicized characters feature non-explicitly, e.g. voice, silhouette, image.)