The only other actors you see in this, are via video clips and, in the case of Kevin Spacey ("Telstar" and "21"), via his voice, that of GERTY, the ever present and meticulously obedient robot which shares the desolate space port with our hero.
As this unsettling plot develops, you become more and more invested in the outcome...that's probably all I should tell you. Just see it, but don't be mad, okay?
Interesting bit of trivia: The neophyte director, Duncan Jones (II), is the son of David Bowie, the musician.
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Take a look:
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