When the Dadan Indians discovered what grew in the underground caves, they made it a sacrament. When the Ashton family re-discovered it a century later, they used it as a doorway. Now something waits on the other side of that doorway, a vast and malefic intelligence that feeds on human potential and threatens all existence. Can seven college students on summer break stop this primal force from reshaping reality in its own image, or will they be the first to fall before its limitless power?