The Dark Gate Digimon: Digital Monsters : Season 2 Episode 45

With Oikawa's goal complete, he hands Ken over to Daemon. Davis and the other DigiDestined intervene, but Imperialdramon and the other Digimon are powerless against him. As Daemon is able to re-enter the Real World even after being sent back to the Digital World, Ken takes a risk in redirecting the portal to the Dark Ocean. Oikawa lets the kidnapped children return home as he and his followers escape.