There's been an intruder on the lose for a while now and as soon as he saw someone where they shouldn't be, he gave chase out of curiosity. He can't tell who he's chasing, but he know's he doesn't recognize them.

"Hey! Come back!"

He shouts gently. He chases them into a clearing, and backs them up into a tree. He can't see their face as it's covered with a mask.