"Sup yo! What's this Team Plasma you're talking about do?"
"Nope! When the ocean's your home, you don't worry about things like that. 'Cause the ocean accepts all rivers! So you think Team Plasma's bad, then?"
After that you have the option of Yes or No. If you say Yes he follows up with:
"I get it. They're bad, so you fight 'em."
If you say No:
Shoots! Not bad... You think that but still fight!"