It's going to be very story-based, and it's pretty much the opposite of the main-series games. This one, is on an island surrounded by many mountains, and you're from the biggest city (none of that small stuff like Newbark, Pallet town, etc.). It's got a huge plot that I still need to cut down on a lot. Your game sounds interesting too, though :)
So, it's set 4 years AFTER the protagonist of R/S/E beat the Elite Four and such?