In the aftermath of Judgment Day and the takeover by the machines, John Connor (Christian Bale, The Dark Knight), the destined leader of the human resistance, must counter Skynet's devastating plan to terminate mankind. As Connor rallies his underground street fighters for a last, desperate battle, he realizes that to save the future he must rescue his own father, Kyle Reese (Anton Yelchin, Star Trek). But the most shocking discovery comes with the arrival of Marcus Wright (Sam Worthington, Avatar), a mysterious loner from the past who challenges Connor with an impossible choice that will determine the future of the human race - leading them both on a brutal journey into the very heart of the enemy.