In this game, you can choose from three scenarios (Al, Klinsy, and Papelne) at the start of the game. Each scenario not only has a different story, they have diferent exploration and battle systems. By clearing all three scenarios, a new scenario will appear.
There's still no word on a specific release date for Brave Dungeon: The Meaning of Justice. All we've heard is that the game is due out sometime this year. At least we can see progress is being made, so hopefully info on a release date is soon to follow.