It's been eighty-nine days since the Day of Darkness, and Twilight Sparkle is still on her own. Eighty-nine days since she talked to anyone other than herself.
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.
After an accident, Rarity and Twilight are thrown in a race against time to stop their transformation into changelings before they become part of Chrysalis' swarm forever.