Applejack and Apple Bloom were your typical earth ponies, humble and simple, only thing special about them being that they are a part of the Apple Family business. One day they get the, as they later learn, not so bright idea to wander off to a run down arcade and to make a long story short basically gamble away their souls to Lord Tirek
They eventually manage to strike a deal with him to spare their souls but in return they'll have to collect the souls of runaway debtors. Unfortunately for the duo he's gonna make it a lot harder from them than anticipated luckily for the sisters they also have something that'll make it somewhat easier (But not by a lot)
Cover art by MLPLary6 (Looks smilair to offical art of Cuphead and Mugman)