Although nasty evils have been eradicated from Equestria, the harms of wrongdoings do not vanish with their leaders. The changelings have done harm throughout and beyond Equestria, and restoring justice is up to the good nature of the new hive. Ocellus discovers this duty when a newcomer arrives and engages the Young Six.

Tags for some pretty strong torture imagery.
A thousand appreciative comments about RanOutOfIdeas for helping out with the editing.
Another round for BWG, which helped spawn this story idea with the prompt: "You shouldn't let kirins lie to you", as well as providing feedback.