Terminator Salvation

Arnie's not back, but the characters are. Set back in the past when John Connor was a young man, this film follows their battles against Skynet. A newcomer, a convicted murderer, is keen to meet John, but John and his friends become suspicious of the killer when they discover something about him. As the decisive battle with the Skynet forces looms closer, John must contend with the murderer, as well as rescue his own future father from a Skynet camp, before the battle actually breaks out.