Rebel Stone and his parents have just relocated to Morgan McGuire’s mansion, a grey stone castle on a grassy knoll overlooking the Mississippi River. The castle is all theirs for the time being, except for the one room they are strictly forbidden to enter during their stay−a master suite that has been sealed shut for over one hundred years. No stranger to paranormal events, Rebel Stone is a ghost detective with over three years experience in chasing spirits. When confronted by the dark forces within the mansion, Stone faces his ethereal challenges with the courage of a man. He eventually befriends the Ghost Whisperers, Stephanie and Agatha, and begins attempting to free their spirits. Local resident Becky Robinson steps in to help, and she and Rebel are swept along an extraordinary adventure where they encounter not only ghosts, but also outrageous animals, an invisible extraterrestrial presence determined to take over the planet, and a monster with an unquenchable thirst for power. Becky, Rebel and the Ghost Whisperers devise a plan they hope will force the seemingly undefeatable extraterrestrials to leave the planet, returning the citizens of Shadowridge back to their former selves.