While walking through the dark forest of Kitakami at night, you start to feel something was watching you, and while you look around, you see an angry face watching you. It then runs up to you, and as you yelp and fall down, the face turns out to be a mask, and the one carrying it was the legendary Pokémon, Ogerpon. It giggles mischievously after its successful spook prank on you.