U.S. Border agent Angel Waters (Roberto Urbina) comes across what would normally be a routine illegal crossing, but it quickly spirals into his worst nightmare. In a tragic twist of fate, a detained immigrant is killed while being held at a remote border outpost. Under the cover of darkness, Angel and two fellow agents bury the man’s body deep in the desert in an unmarked grave. They swear an oath of silence, but their secret, along with the victim, will not remain buried. Days later, Angel is called back to the river where he is met with a terrifying sight -- the same migrant he buried is standing at the river's edge. As strange phenomena begin to overtake the agents’ lives, they soon learn that on this land, that which dies doesn't always stay dead.