In 1994, a cyborg (Arnold Schwarzenegger) is sent back in time to protect John Connor (Edward Furlong), the future leader of humanity in a 21st century war against machines. A competing machine (Robert Patrick), the T-1000, is sent back to kill John. With the aid of John's mother Sarah (Linda Hamilton), the cyborg manages to destroy the T-1000 at a confrontation at a steel mill. However, the cyborg must then destroy itself in order to eliminate its chance of being used to help fuel the future war with the machines. Sarah helps the cyborg destroy itself, but not before the cyborg consoles John, quietly assuring him that everything will be okay. Sarah then notes that if a machine can learn the value of human life, perhaps people can, too.