I am searching for the name of a vintage science fiction movie. Somebody enters another world and discovers that people get hypnotized by a loud signal that calls them to go inside a building. Once the signal stops people who did not reached the building just carry on their normal life. He falls in love with a woman and tries to prevent her for going inside every time the signal sounds. He tries to discover what and who is behind all this.
Gorgo Answered question Jan 3, 2021
