Bioshock meets MLP in this psychological thriller, where Celestia's new faithful student, Siren Song, must discover the truth behind the city beneath the waves. Arriving in pursuit of Twilight, Siren finds herself trapped in a city of horrors.
Spike finds Chrysalis after the wedding, battered and beaten, but offers her a chance for redemption. However, things develop past that after he gets to know her, not as an enemy, but as a pony - or rather, as a changeling. . .