With the help of her sister, their childhood friend and his teen daughter, Cecilia Kass escapes from her boyfriend, a rich and brilliant but violent and controlling scientist. Now she is trying to change her life for the better away from him. She then learns that he has left her a big portion of his fortune after he committed suicide. However, she suspects that his death was a hoax. Her sanity begins to unravel as she tries to prove that she is being hunted by an invisible man, as a series of eerie coincidences turns lethal and threatens the lives of her loved ones.