On a desiccated African savannah four million years ago, man's ancestors are competing with tapirs for food and preyed upon by feline predators. One day, they wake to discover a black monolith, which the group hesitantly touches. They soon discover the use of tools, using a bone as a club, which they use to kill tapirs for meat and to protect their small water hole from a rival group.
Above the 21st-century Earth, a space plane slowly and majestically docks with an orbiting space station. The only passenger on board is Haywood Floyd, a senior official with the National Council of Aeronautics. He meets the head of station security, makes a picture phone call and talks to Russian colleagues while awaiting departure for the moon. He tells the Russians that he cannot discuss rumors of an epidemic at Clavius. Floyd boards a spherical lunar ship, where he is again the only passenger. The ship makes a slow descent and landing at the Moonbase, where Floyd briefs station personnel, apologizing for the epidemic cover story and quarantine of the base, emphasizing the need for absolute secrecy regarding their discovery. He then takes a flying moon bus to Tycho crater, during which they discuss an alien object that was buried on the moon four million years ago. They disembark and enter the excavation, which contains an identical black monolith. Floyd touches it, and while they are posing for a photo the monolith emits a piercing signal.
Eighteen months later, an interplanetary spacecraft is traveling toward Jupiter. On board are David Bowman and Frank Poole, three members of a survey team in cryogenic hybernation, and a sentient HAL 9000 computer, which operates the ship. A spherical module, whose central ring rotates to simulate gravity, houses the humans. They spend the long months of the voyage exercising, watching television interviews, receiving video messages, doing systems checks and playing chess with HAL. HAL reports that a component in the communications antenna system will soon fail, so David goes EVA in one of the small spherical pods to replace the component. They test the component and can find no malfunction. David and Frank enter a pod to have a private conversation, and they agree that if HAL is malfunctioning they will need to disconnect him and continue the mission manually. HAL is able to read their lips, however, through the pod window.
Frank goes EVA again to replace the original unit to see if it will actually fail. While a space-suited Frank is outside the pod, HAL uses the pod arms to cut his air hose. David, seeking to rescue Frank from this apparent accident, goes in another pod to retrieve him. When David returns with Frank's body, HAL will not allow him to re-enter, telling him he cannot allow him to jeopardize the mission. HAL also discontinues life support for the three members of the survey team. David has forgotten to bring his helmet, and must re-enter the ship through an emergency hatch by hurtling through vacuum into the airlock. He then methodically disconnects HAL's memory and logic modules while HAL begs him to reconsider. When HAL is fully disconnected, a video recording by Floyd explains for the first time that the mission, known only to HAL, relates to an alien monolith on the moon that sent a signal toward Jupiter.
David arrives near Jupiter to discover another monolith orbiting among Jupiter's moons. When David goes EVA in a pod to investigate it, he is drawn into a space-time anomaly, and an inexplicable and harrowing voyage ensues. He sees psychedelic planes of colored lights flow past, eerie cosmological scenes, alien planetary landscapes and a scene with seven floating diamond-shaped objects. His voyage finally ends with the pod resting in a stately bedroom suite. David has aged, and continues to age further in a series of scenes where he is walking around, eating a dinner, and finally in bed obviously near death. A monolith appears at the foot of the bed. David reaches for it and changes into a large fetus in a glowing amniotic sac. Reborn as a "star child," he is then transported back to Earth, where he looks down enigmatically on his home planet.
A unique and artful triumph





