An ambitious teen conducts an ancient ritual to enact petty revenge on those who she believes have wronged her.

After catching her boyfriend cheating, Jenna turns to impractical means of getting revenge; her vengeance comes in the form of Lillith, who is bloodthirsty.

Pulled in by a series of strange and unexplainable video clips, a brother and sister team up to investigate the events captured in the footage, only to discover a shocking secret that’s overtaking their small-town Texas community.