Many years following the apocalypse, a devout female-led cult of mute zealots hunts down Azrael (Samara Weaving), a young woman who has escaped her imprisonment. Recaptured by its ruthless leaders, Azrael is to be sacrificed to pacify an ancient evil that resides deep within the surrounding wilderness – yet she will stop at nothing to ensure her own survival. Azrael makes a savage bid for freedom as her escape accelerates towards a vicious showdown between the very forces of good and evil.