Four years after the events of "Digimon Adventure", the Digital World is invaded by the Digimon Emperor, who is enslaving Digimon with the Dark Rings while building Control Spires that negate Digivolution. To fight him, three new DigiDestined are recruited, each gaining an ancient Digimon for a partner. The three, along with T.K. and Kari, each possess a D-3, a new type of Digivice 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-Eggs that allow their Digimon partners to undergo Armor Digivolution to counter the presence of Control Spires. The Digimon Emperor, revealed to be boy genius Ken Ichijoji, flees to the Digital World. Assisted by Ken's partner, Wormmon, the DigiDestined defeat Ken.