In the midst of Zack and Kelly's complicated lives, something evil and dark is brewing in the spiritual realm that co-exists alongside the human one they reside in. A spirit named Ryan is recruiting spiritual energy to completely destroy the barriers that separate the human realm, spiritual realm, and the abyss; a place where the demented, banished spirits have long awaited for their 'Savior' to release them into the human realm once again. For Ryan to gain the amount of power it would take to do so, he has to take over Zack's body completely. When Kelly finds that Zack has been attacked in...