A black comedy about the princesses extreme age-induced Nihilism wherein they just stop giving a shit and start experimenting to see how ponies react.
Basicly they reach the same point discord has (non-cannon discord)
It starts small with things like celestia dropping her political mask and openly frowning at visitors
Then progressing to larger things once they realise their subjects emotional pain does not bother them as much as they thought it would.
