 They all dwell on the sixth, highest plain of the Digital World, said to be the first Digimon to reach their highest form and modeled after four symbols.However, when the D-Reaper emerged after years of hibernation, the Sovereigns fell into disarray over the usage of the Catalyst of Shining Digivolution to digivolve every Digimon to fight back against the threat.But knowing that their ability to digivolve is what's causing the D-Reaper to stir convinces Azulongmon to have the DigiGnomes turn the Shining digivolution into Calumon and send him to the human world.