A pack of Sirens, an Alpha and two Betas, come to Canterlot High looking for a chance to regain their full magic potential. Sunset Shimmer, an Alpha trying to redeem herself in the eyes of the school after her Fall Formal fiasco, notices something off about the trio, more than just their abnormally delicious pheromones. It's up to her friends to take down this new threat just as they did months ago.

However, things get a little stickier than expected when Twilight accidentally assigns Sunset as the Sirens' new monitor. The Sirens are adamantly against anything even remotely friendship-related, preferring to continue on their destructive path. Sunset and the Humane Five have to convince the trio that being helpful and kind is the best option for survival. And they have to do it before the Sirens' Nourishment Amulets grow back.

ABO-verse Rainbow Rocks, with Alphas Sunset and Twilight, Betas Rainbow Dash and Applejack, and Omegas Pinkie, Rarity and Fluttershy.

Warnings and Kinks: intersex!Sunset, intersex!Sonata, sex (like three chapters involving it planned at the moment), lots of MENTIONS of sex (because ABO-verse), incest (only implied, but best to warn about it anyway).