Build a movie plot around this: Who is GERTY receiving instructions from? Lunar Industries.
The answer to this question is:
In 2035, Lunar Industries has made a fortune after an oil crisis by building Sarang Station, an automated lunar facility to mine the alternative fuel helium-3 from Moon rocks, rich in the material. The facility is fully automated, requiring only a single human to maintain operations, oversee the harvesters, and launch canisters bound for Earth containing the extracted helium-3. Currently, Sam Bell nears the end of his three-year work contract at Sarang Station. Chronic communication problems have disabled his live feed from Earth and limit him to occasional recorded messages from his wife Tess, who was pregnant with their daughter Eve when he left. His only companion is an artificial intelligence named GERTY, who assists with the base's automation and provides comfort for him.Two weeks before his return to Earth, Sam suffers from hallucinations of a teenage girl. One such image distracts him while he is out recovering a helium-3 canister from a harvester, causing him to crash his lunar rover into the harvester. Rapidly losing cabin air from the crash, Sam falls unconscious in the rover.Sam awakes in the base infirmary with no memory of the accident. He overhears GERTY receiving instructions from Lunar Industries to prevent him from leaving the base and to wait for the arrival of a rescue team. His suspicions aroused, he manufactures a fake problem to persuade GERTY to let him outside. He travels to the crashed rover, where he finds his unconscious doppelganger. He brings the double back to the base and tends to his injuries. The two Sams start to wonder if one is a clone of the other. After a heated argument and physical altercation, they together coerce GERTY into revealing that they are both clones of the original Sam Bell. GERTY activated the newest clone after the rover crash, and convinced him that he was at the beginning of his three-year contract.The two Sams search the facility, discovering a secret vault containing hundreds of hibernating clones. They determine that Lunar Industries is...