I wonder...
Will it take place during the time of Maxos, or will it take place just after Maxos disappeared? Let's face it, Maxos, as the progenitor of the Dragon Knights, might have been to wield some influence and force some kind of peace between them if only because he's the man on top. However, since all (or nearly all) the Dragon Knights are fighting each other for dominance, it would seem to me that Maxos has gone and now the Dragon Knights are struggling to fill the sudden vacuum of power.
This is all just speculation, though.
But in any event, yes, it all takes place long, long ago.