Professor Hemlock: "Hey bud! Welcome to the world of Pokemon… not that you really need the reminder. Anyway the name's Hemlock and I'm here to help you on your journey.
Nadeas is quite a beast when compared to other regions with every environment you could possibly imagine. Getting anxious? Not to worry there's always a train or bus you can catch to make it back to civilization!
Speaking of all that nature this region is obviously filled with many mysterious and pretty neat creatures we call Pokemon. There's countless of them around the world though about a hundred or so are completely unique to Nadeas. You'll have to climb every mountain, run along every beach and explore every forest if you hope to find them all.
We humans have long enjoyed a (mostly) peaceful existence with Pokemon, helping each other achieve our goals. Pokemon love to battle each other in friendly competition and, as a trainer, I'm sure you'll be making it your goal to help your partner become the best they can be.
Anyway I've rambled enough so let's get going!"