Becky and Hunter decide to climb an abandoned radio tower 600 metres high in the middle of the desert. They find themselves stranded at the top of the tower, exposed to the blazing sun, desperately fighting to survive the elements without any supplies.

After trapping the protagonists in a shark cage at the sea bottom in 47 Meters Down, producer James Harris expands on this concept, but this time with characters stuck at the top of a tower, in a breathtaking thriller that will give even the most seasoned viewers vertigo.