1,000 years ago Earth was visited by an alien race from another dimension, the Grays, who used their technology to mix human and alien DNA to create a superior race, the Hybrids. The Grays, feeling they had accomplished their goals, took a group of Hybrids back to their dimension and left the rest on Earth. The Hybrids quickly turned on their creators and took over their dimension. Fearing for the humans, the Grays returned to Earth and deactivated the Hybrids, allowing them to live as part of the human race unaware of what they truly were. To prevent the Hybrids from crossing over into the human universe to reactivate the Hybrids left behind, the Grays recruit a team of human spiritual warriors to stand between the Hybrids and Earth.