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 a sad 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.