Hey! I plan on having arceus appear at some point but later on in the rp (think it's a bit early yet - the way I see it he's putting the new council to the test) - how about he sends in Groudon to help repair the damage to Mt. Coronet??
So, it would start off with them arriving at the island and meeting each other and the production team, who tells them their purpose and then abandons them all to their luck. They know there's a surveillance team somewhere, but can't find it.