In the film, Rebecca (Teresa Palmer) believed she had left her childhood fears behind when she moved out. As a child, she was never certain what was real when the lights went out at night. Now, her younger brother Martin (Gabriel Bateman) is experiencing the same unexplained and terrifying occurrences that once jeopardized her safety and sanity.

In horror movies, the scares often have deeper meanings or are linked to mental illnesses. In this film, the haunting entity symbolizes depression, often represented by the colour black, signifying emptiness and the draining of happiness.

As children, many of us feared entering our rooms after turning off the lights, influenced by horror movies suggesting something would follow us. In this film, that fear becomes a reality, keeping the audience on the edge of their seats and rooting for the main characters to escape.