Simone is a single mother and a security guard who suffers from post-traumatic stress disorder because of a robbery that killed her colleagues during their duty. She lives with her teenage son, RJ, whom she works hard for. After the unfortunate incident, she was assigned by her agency to guard an abandoned building which is believed to be haunted by disturbing spiritual elements. Strange events soon occur during her shifts, making her reminisce the painful past that immediately takes a toll on her and her son's life.