So what's the plot going to be like? I've read of lot of leaks but I don't know which ones are confirmed and which ones were bs

From what I gather it seems to be something like
>Marnie is a princess and has Meteodyna
>her fans aren't evil
>their leader wants Meteodyna to summon Zacian/Zamazenta and stop Eternatus
>Eternatus is the real bad guy

But what about Bede? He gets sponsored by Rose/Oleana but for what purpose? And what are those hexagons all of them wear?