During Christmas, Control Spires appear across the human world, bringing Digimon with them. While the DigiDestined set off with Imperialdramon to destroy them with the help of the international DigiDestined, Arukenimon and Mummymon begin kidnapping several children for Yukio Oikawa, a friend of Cody's father who dreams of entering the Digital World. Once the DigiDestined return to Japan, they fight the Daemon Corps, and their leader, Daemon, while Oikawa uses the Dark Spore inside Ken to implant them into the children. After imprisoning Daemon in the Dark Ocean, BlackWarGreymon returns to redeem himself after a battle between Imperialdramon and WarGreymon. BlackWarGreymon sacrifices himself to seal the portal to the Digital World at Highton View Terrace, before Oikawa and the kids can transport there.