Set shortly before the first episode of Friendship is Magic, Daughters follows a young pony who is convicted of a crime she doesn't remember committing. When Princess Celestia finds that she has amnesia as well, she sends the pony on a quest to sovle this strange puzzle. After some investigation(with help from Twilight Sparkle), Celestia realizes that this event hides a force that could threaten to tear all of Equestria apart.