What happens, when a serial killer has killed several people without any reason and still killing? The plotline of the movie ???Frightening Anonymous??? is based n that. In the first scene of the movie, a man is introduced. He is not the hero of the movie. He is a serial killer. He had killed numbers of people. He has no reason to kill them. He says that it gives him relief. Police of that city is looking for them, but they are not known with that killer. There is a police officer, who strongly decides to catch that killer. On the other hand, killer is getting ready for his next hunt. Will the police officer be able to catch that thief?