When Ripley's lifepod is found by a salvage crew over 50 years later, she finds that terra-formers are on the very planet they found the alien species. When the company sends a family of colonists out to investigate her story... all contact is lost with the planet and colonists. They enlist Ripley and the colonial marines to return and search for answers.
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. Meanwhile, the human-resistance movement dispatches a lone warrior to safeguard Sarah. Can he stop the virtually indestructible killing machine?
A group of renegade marine commandos seizes a stockpile of chemical weapons and takes over Alcatraz, with 81 tourists as hostages. Their leader demands $100 million to be paid, as restitution to families of Marines who died in covert ops. Otherwise, he will launch 15 rockets carrying deadly VX gas into the San Francisco Bay area.