You don't even know what fanfic this is so I will make it simple: this fanfic is baced off of a show called My Little Pony Friendship Is Magic and a video game called Fallout. the link to the wiki of the show
[link]and the link to the wiki of the game series
[link]now, if you pay attention, the zebras are a type of ponies that are well... zebras and I guess from this fanfic, Fluttershy wants to rid the zebras. Now, if I left anything unexplained don't hesitate to ask.