Set in the near future, Moon follows Sam Bell (Sam Rockwell), a lone worker nearing the end of a three-year contract at a lunar mining facility called “Sarang” on the far side of the Moon.
Due to a permanent satellite malfunction, live communication with Earth is impossible. So, with only an artificial intelligence companion named GERTY for company (voiced by Kevin Spacey), Sam spends his days harvesting Helium-3 (a clean energy source that has solved Earth’s energy crisis) while counting down the weeks until he can return home to his wife Tess and daughter Eve.
After crashing his lunar rover outside the base during a routine inspection, he wakes up back in the infirmary with no memory of how he got there.
Overhearing GERTY receiving a live, real-time transmission from Lunar Industries executives – proving the communication blackout is a lie – Sam suspects GERTY is hiding something and sneaks back out to the crash site.
There, he makes a mind-bending discovery that completely shatters his reality.
Inside the wrecked cabin of the lunar rover, he finds a nearly dead, unconscious astronaut. He rescues the man and brings him back to the base.
When the rescued astronaut wakes up, both men realise they are identical copies of Sam Bell.
The older Sam (the crash survivor) and the younger Sam (the one who woke up in the infirmary) immediately clash, each believing they are the “real” human.
The younger Sam is angry and physically fit, while the older Sam is rapidly deteriorating, losing teeth and vomiting blood.
Investigating the base together, they discover a hidden underground chamber containing thousands of Sam clones stored in stasis pods and realise that Lunar Industries never intended to send anyone home.
Every Sam clone has an artificially implanted memory of a life on Earth. Each clone is programmed with a strict three-year lifespan, engineered to degrade rapidly at the end of the contract.
When a clone “returns home” via the base’s return capsule, they are actually incinerated, and a new clone is awakened by GERTY to start the cycle again.
The younger Sam drives a rover far past the base’s interference towers to establish a live transmission to Earth.
He dials his home phone number and a teenage girl answers the phone.
He asks to speak to Tess, but the girl reveals that Tess died years ago.
The girl on the phone is Eve – now 15 years old – who says her father (the real Sam Bell) is alive on Earth but away. The clone realises that the real Sam Bell sold his DNA and memories to Lunar Industries years ago, and generations of clones have lived and died on the Moon ever since.
GERTY reveals that a corporate cleanup crew is en route to fix the broken harvester and kill both clones.
The older Sam is too weak to survive and convinces the younger Sam to escape to Earth inside a Helium-3 transport pod.
To hide the escape from the corporation, the younger Sam drives the dying older Sam back out to the rover wreck, placing him back in the cockpit so the cleanup crew finds exactly what they expect.
Before leaving, the younger Sam wakes up a third clone to take over the base and alters the automated harvesters to crash into the jamming towers, allowing future clones to have live access to Earth.
The younger Sam then launches himself to Earth in the cargo pod. As the film ends, the transport pod enters Earth’s orbit, and over the audio track, various news broadcasts reveal that the escaped clone has successfully exposed Lunar Industries’ horrific human rights violations, sending the corporation’s stock prices into a historic freefall.
Moon accomplishes a great deal with very little. In his feature film debut, director Duncan Jones creates a believable futuristic world without relying on extravagant effects or endless exposition, focusing instead on character and atmosphere.
Due to a tight budget of roughly $5 million, Jones relied heavily on physical scale models and miniature sets rather than CGI, giving the film a gritty, retro, and highly realistic sci-fi aesthetic.
The film raises fascinating questions about identity, humanity, and corporate ethics while never losing sight of its emotional core.
Sam Bell
Sam Rockwell GERTY (voice)
Kevin Spacey Sam Bell Body Double
Robin Chalk
Director
Duncan Jones
Video
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The older Sam (the crash survivor) and the younger Sam (the one who woke up in the infirmary) immediately clash, each believing they are the “real” human.
When a clone “returns home” via the base’s return capsule, they are actually incinerated, and a new clone is awakened by GERTY to start the cycle again.
To hide the escape from the corporation, the younger Sam drives the dying older Sam back out to the rover wreck, placing him back in the cockpit so the cleanup crew finds exactly what they expect.
