A dusty old book and hours upon hours of translating has Twilight Sparkle reciting an old spell that sends her back into an alternate universe, where she finds herself among a crowd of eleven-year-old witches and wizards, boarding boats and traveling to a castle. Sorted into a Hogwarts house, given access to a massive library, and making new magical friends has her smiling and having a great time, until her new friend, Albus Severus Potter, gets into trouble with an old, dusty book of his own. Will Twilight be able to save her friend in time, or will she lose him to the darkness forever?