The Signal from 2014 ends on a shocking note. 1 / 7
The movie follows three friends who are taken to a mysterious facility after exposure to an alien signal. 2 / 7
The ending reveals they've been inside an alien city the whole time to test their bond with alien technology. 3 / 7
The final shot reveals the test environment is an alien city in outer space. 4 / 7
The concept mirrors 1998 cult sci-fi movie Dark City. 5 / 7
The floating city itself seems somewhat inspired by NES game Air Fortress. 6 / 7
The concept ties into the films themes of logic vs emotion. 7 / 7