You start in your room. Your friend comes to see you, asking about a package. A girl comes later. There's a big present on the table. You open the present and there are three pokeballs. It's from the professor (who, by the way is a chick). You pick whichever one you want, and the guy friend will exclaim that that's the one he wanted to pick. But whatever, he wanted the other one more anyway (in my case it was Pokabu, or whatever the pig's name is).
The girl, Belle, instigates a pokemon battle. The other guy says no because the pokemon are too weak and they might mess up the room. The girl says it'll be okay because they are so weak. Without further ado you are in a battle. Afterward the boy heals your pokemon and battles you himself. The room is super damaged by the battles. Belle is really surprised. They decide to go down and apologize to your mom.
You are then left alone. You can look around your room, but there's not much to do. Everything is a mess, and there are paw prints on the walls and floor. The only thing that looks all right is your Wii. You can go up to your Wii and it says "There's a Wii! It's not broken at all". Well, Wiis are pretty sturdy...
You go down to your mom, where the boy and Belle are apologizing for the noise and the mess, saying they'll clean it. The mom tells them not to worry. They leave then, the boy going to visit the professor and the girl decides to go back home first. Your mom gives you a pokemon watch thing (can't remember the name) and you decide to go see the professor. First though, you're going to Belle's.
You go to Belle's house and her dad is busy yelling at her, telling her "it's no good!" over and over. Belle runs out then. Apparently he doesn't want her to go off on a pokemon adventure. The mother understands his feelings, but eventually every child must do this to grow up into an adult.
So with that in mind, you head toward the lab where the professor and the others are waiting...