In the world of Pokémon, there are trainers that chase after Mythicals and Legends. One of those trainers intends to visit every region. Teamed up with his Ralts, Miles starts his adventure in Sinnoh to begin his search for Shaymin. The starting point for him will be a ship that's scheduled to dock in Pastoria City. Now as for the ship's position, that will depend on how many want to start on the ship. In terms of characters, I'll allow trainers or Pokémon. Having a trainer and Pokémon or even just two Pokémon might make it easier to come up with things to write. Just don't go starting off with anything that's evolved twice, unless it evolves fairly early like Metapod into Butterfree. Crobat also works, because you could theoretically evolve a Golbat a second time immediately after evolving just from having friendship high enough at the time. Same goes for stone evos and the like. Basically mons you could possibly use midgame if we were playing the games. As for how many people, I'd like to get two other people, and then anyone else who wants in can join later if we've already started.