A cyborg, identical to the one who failed to kill Sarah Connor, must now protect her teenage son, John, from a more advanced cyborg, made out of liquid metal.

An augmented human and Sarah Connor must stop an advanced liquid Terminator, from hunting down a young girl, whose fate is critical to the human race.

A human-looking indestructible cyborg is sent from 2029 to 1984 to assassinate a waitress, whose unborn son will lead humanity in a war against the machines, while a soldier from that war is sent to protect her at all costs.