When a chance encounter implants a worry into Twilight Sparkle’s mind, she uncovers an alarming secret about her, Celestia, and Luna’s legal right to the Equestrian throne: Namely, they have none.
Turns out Rainbow Dash and Rarity are a married couple, and have been since before Twilight moved to Ponyville. Twilight never knew this. Hilarity ensues, as well as a few feels.
This compilation of one-shots explores the lives of Twilight Sparkle's friends now that many of them host the strange alien beings they know as symbiotes.