Continuing to Nimbasa City, Ash and friends suddenly find themselves caught in the rain. They notice a mansion nearby and go inside hoping to seek shelter from the rain. However, things are not as they seem. They meet a a group of Litwick who at first seem to be nice and friendly, but soon begin causing all kinds of haunting trouble for the group. Meanwhile, Team Rocket is also in the mansion hoping to turn it into their Unova base. However, their plan to use the Litwick to get Ash and friends out of the mansion backfires on them when the Litwick turn on them.