Seeking Shelter from the Storm!

While heading towards Cyllage City, Ash & Co. get stuck in a storm and have to find shelter. Coming upon a large mansion, they find that nobody is in it, but some strange things start to happen in it such as things moving, lights turning on and off and doors slamming. Despite these strange happenings, Ash & Co., along with Team Rocket, decide to head further into the mansion, but a mysterious shadow starts to follow them...