Pecharunt thrives on controlling others. Spiritomb is a literal punishment. Indigo doesn't want to believe in evil Pokemon, but these two sure seem like the exception. Then one of Spiritomb's ghosts rescues him from a fatal blow by binding him to the Odd Keystone. Through the stories of its other inhabitants, he uncovers Spiritomb's history with Pecharunt...and the strange trainer who found her in the woods once her battle with Ogrepon ended.