When a composer is tasked with finishing her late mentor's concerto, she soon discovers that playing the music summons deadly consequences, leading her to uncover the disturbing origins of the melody and an evil that has awakened.
The plot of the film sees a U.S. military veteran — Sergeant Rick Pedroni — return home changed and dangerous after a tour of duty in Afghanistan where he suffered an attack by a mysterious force. While officials dismiss his behavior as PTSD, and order trauma therapy, Rick's wife Kate discovers her husband has been possessed by a malevolent spirit. Kate has to race against time to unmask the truth and save her husband from the evil force.
Zora has been described as an indigo since childhood, making her life always haunted and targeted by supernatural beings. Alongside her younger sibling, who is also an indigo, they strive to overcome their fear of these unseen attacks.