(I do not own anything, MLP belongs to Hasbro. Fallout Equestria belongs to the master writer KKAT.)
(WARNING CONTAINS SPOILERS for Fallout Equestria) {This branches off from the cannon story around the middle of Chapter 29.}
The mane 6 and Trixie finds themselves pulled into the Fallout Equestria universe. Their only way home is in an old spell book, belonging to Star Swirl. Unfortunately it's now somewhere, in the Equestrian wasteland. Along side Littlepip and her friends, they will journey across the wasteland. Along the way the mane 7 are going to see first hand how hard life is here. They will encounter the hostile creatures and ponies, that call the wasteland home. While Littlepip and her friends, gain some temporary allies. Even if they do find the book can they survive a new wasteland horror.