An alien is sent to Earth to find a way to save his dying home planet. He adopts a human identity and uses his advanced knowledge to become a successful tycoon. However, he is corrupted by the sensations and vices of human life and loses sight of his objective. Nicolas Roeg's Sci-fi drama, starring David Bowie, Rip Torn, Candy Clark and Buck Henry.

Thomas Jerome Newton is an alien who has come to Earth in search of water to save his home planet. Aided by lawyer Oliver Farnsworth, Thomas uses his knowledge of advanced technology to create profitable inventions. While developing a method to transport water, Thomas meets Mary-Lou, a quiet hotel clerk, and begins to fall in love with her. Just as he is ready to leave Earth, Thomas is intercepted by the U.S. government, and his entire plan is threatened.