Returning home after an errand, Fluttershy encounters an escaped unnatural storm from the Everfree Forest heading toward Sweet Apple Acres; determined to save Applejack's life, she sacrifices her own in the process. Later, at the Castle of Friendship, an impostor shows up claiming to be Fluttershy ... but she can't possibly be, can she? She has quite the story to tell Twilight and Applejack about what happened to her.