Arriving in the Illex Forest, with your starter Pokémon, you find a masked guy, with a mask and a Dark smile..? He looks at you, laughing.

"Fufufu, a Young trainer?"

He said, then pulling out a Pokéball.

"I'll end you like I ended the Trainer with Farfetch'd."

He laughs again, your Pokémon enters in front of you, protecting you and preparing for a battle.