COBRA Securities agents Hunter McGrath and Talia Cohen pose as husband and wife to infiltrate a mysterious cult, led by the charismatic Elijah. With little to go on besides the fact that Elijah, the self-proclaimed Keeper of the Light, only accepts married couples into the fold, they set out to contact a member whose parents are worried about the safety of their only daughter. But once inside the gates of utopia, they discover a killer among their midst and a plot far more sinister than they could have imagined. Soon they are ensnared in a web of intrigue and danger that threatens the success of their mission...and their lives.