Digimon: Digital Monsters - Season 2 Episode 43 Invasion of the Daemon Corps
Overview: The Daemon Corps invade Japan, targeting Ken, and SkullSatamon overwhelms Paildramon. The older DigiDestined Digimon relinquish the power to allow Imperialdramon to transform into Fighter Mode to destroy SkullSatamon. Daemon demands the DigiDestined surrender Ken, but Ken is forced to turn himself into Arukenimon's custody when she reveals the children she and Mummymon abducted.