Some temperamental Digimon named Jupitermon crashed the party, made this whole big deal about enacting "justice" because us Chosen went and "sacrificed" other Digimon. Then he started flinging lightning bolts around, some other Digimon intervened, and the two wound up doing even more damage just by brawling with each other.

[He groans, bringing a hand to his face.]

And before that, I guess some Digimon named Titamon launched this huge attack with an army of weaker Digimon. Wasn't here for that, so I can't say much more, other than the fact that he's part of the reason why most of us have two Digimon.