The so-called 'World Famous' Flim Flam Brothers, after being defeated by Applejack and her friends, decide that they just weren't cut out for the cider making business. So, in the small town of Horseton, they discover a mysterious new mineral that could revolutionise all of Equestria! Trouble is, there are also a lot of people in the town who will do whatever it takes to make sure they get it first.