What we previously knew about the plot of Terminator Salvation: The Future Begins: Christian Bale plays an older John Connor; a young Kyle Reese shows up in the form of Anton Yelchin; Sam Worthington plays some guy named Marcus. After Skynet brings about a nuclear near-apocalypse, our heroes must keep the machines from wiping out the rest of humanity. That's it. Now, thanks to a Warner Bros. start-of-production press release we know a lot more -- or do we?

"In the highly anticipated new installment of The Terminator film franchise, set in post-apocalyptic 2018, Christian Bale stars as John Connor, the man fated to lead the human resistance against Skynet and its army of Terminators. But the future Connor was raised to believe in is altered in part by the appearance of Marcus Wright (Sam Worthington), a stranger whose last memory is of being on death row. Connor must decide whether Marcus has been sent from the future, or rescued from the past. As Skynet prepares its final onslaught, Connor and Marcus both embark on an odyssey that takes them into the heart of Skynet's operations, where they uncover the terrible secret behind the possible annihilation of mankind."

If you read that a couple of times, it doesn't really make very much sense ("the future Connor was raised to believe in is altered in part..."?). Studio marketing departments aren't known for lucid prose. It's not clear whether the human resistance Connor's going to lead (or so we keep being told) actually gets formed in this movie, or how Reese -- Connor's father -- enters the picture. But at least we have a sense of the storyline, and of who "Marcus" is. Parenthetically, we also learn that Charlotte Gainsbourg will take over as Kate Connor -- the Claire Danes role from Rise of the Machines.