Here’s the official synopsis for those who have never seen the film:
Based on the classic science fiction novel by Walter Tevis (The Queen’s Gambit, The Hustler), The Man Who Fell to Earth is the 1976 science fiction movie by STUDIOCANAL, directed by Nicolas Roeg and written by Paul Mayersberg. It stars David Bowie, Candy Clark, Buck Henry, and Rip Torn.
The story follows an extra-terrestrial called Thomas Jerome Newton (played in the movie by David Bowie) who lands on Earth in search of water to save his dying home planet. Using his advanced scientific knowledge, Thomas becomes incredibly rich thanks to dozens of inventions his company releases. He uses his wealth to search for a way to transport water back to his home planet, but as his wealth and his fame grows, Thomas becomes a target of interest to the U.S. Government who begin to investigate him.
Check out the preview below:

