Taking place 3 years (4 years in the dub) after Digimon Adventure, the Digital World comes under attack from a mysterious human calling himself the Digimon Emperor who is enslaving Digimon with his Dark Rings while building Control Spires that negate Digivolution and act as relays to transmit power to the Dark Rings. To fight him three new Digi-destined are gathered: Davis, Yolei and Cody. They each gain an ancient Digimon for a partner: Veemon, Hawkmon and Armadillomon. The three, along with the now teenage T.K and Kari, each possess a new type of Digivice called a D3 that allows them to open a gate to be transported to the Digital World through any computer. They are also given D-Terminals that hold Crest-themed Digi-Egg-like relics (DigiMentals in Japanese) that allow their Digimon partners to undergo a pseudo-form of Digivolution, Armor Digivolution, to counter the presence of Control Spires. The Digimon Emperor is eventually revealed to be the boy genius Ken Ichijouji, who flees to the Digital World before the Digidestined can confront him at his home. Assisted by Ken’s partner Wormmon, who sacrifices himself for his partner’s good, the Digidestined defeat Kimeramon, Ken’s creation, and have Ken realize his error in believing that the Digital World and Digimon were just part of a game.