|Eddie Constantine||Lemmy Caution|
|Anna Karina||Natacha Von Braun|
|Akim Tamiroff||Henri Dickson|
Government agent Lemmy Caution is dispatched on a secret mission to Alphaville, a dystopian metropolis in a distant corner of the galaxy. Caution is hot on the trail of rogue agent Henri Dickson and a scientist named Von Braun, the creator of Alpha 60, a computer that uses mind control to rule over residents of Alphaville. Caution is aided in his quest to destroy the despotic computer ruler by Von Braun's own daughter, Natacha .