A cyberstalker starts stalking a high school teacher, Rita. The girl realizes that there are too many people around her who have good reasons to turn her life into a nightmare. He hits her where it hurts: work, students, friends, family, self-confidence. Rita tries to understand who this mysterious stalker is and what he wants. Going through and picking up the keys to her ex-boyfriend, students and colleagues, friends and even loved ones, Rita realizes that she can no longer trust anyone.