The Terminator tells the story of a humanoid cyborg (Schwarzenegger) sent to 1984 Los Angeles from the year 2029 with the purpose of killing Sarah Connor (Hamilton), to prevent her unborn son, John, from leading the humans in a future war against the machines.
In the post-apocalyptic future, reigning tyrannical supercomputers teleport a cyborg assassin known as the "Terminator" back to 1984 to kill Sarah Connor, whose unborn son is destined to lead insurgents against 21st century mechanical hegemony.