King Eryn of Thera, an ancient vampire King who becomes immortal by ritual of blood performed millennia ago. His twin brother, Prince Erymach, destroys the temple of their powers. The king's master orders him to restore it by performing thirteen sacrifices where the victims must first build their temple, and then be sacrificed under the eclipse of the full moon. Those were known as "Builders". They are believed to bestow their kind powers to rule humanity and even bring a soul back from the underworld in the body of the last victim.Throughout centuries the king has accomplished twelve sacrifices. His victims mysteriously disappeared, but in the present time he has one more victim to choose. He hires Richard Fox, an young and ambitious architect from Los Angeles offering him all the riches money can buy.Richard forsakes his best friend and business partner to accept a higher position with all the perks; unbeknownst to him, he has signed the darkest contract of his life.