Geophysicist Kate Ferris tries to convince the army that a new weapon is causing volcanic storms. When no one believes her, she teams up with her daughter and estranged husband at the San Andreas fault line to find a way to stop the destruction.
On a mission to find her friend, investigative journalist Melanie Roberts tracks down the Ascension Family Commune and goes undercover to discover what exactly is happening there. Under the pretense of joining, she meets the charismatic leader and charms her way into the cult. But her friend Haley isn't there; and the other women are silent about her disappearance. Dark secrets are buried in the soil of the commune, and though she doesn't know it, Melanie is already in too deep.