In a run-down bar in the middle of nowhere - or at least adjacent to the middle of nowhere - Chrysalis contemplates the mistakes that led her to her current situation in life. At least, that's what she would be doing if she understood the meaning of the word contemplate. Vodka does tend to stop you from contemplating too much else but the acquisition of more vodka.
Salvation arrives in the form of Twilight Sparkle with an offer that she won't be able to refuse.
Romance tag is mainly for Chrysalis' lecherous behaviour toward Twilight, occasional discussion of crushes, and other minor references.
Alternate Universe tag is because, although the plots of the Equestria Girls films are used as a narrative framework, I've put my own spin on the events.