What would you do if you woke up and had no idea how you got where you are? What about when a beautiful woman across from you starts calling you by a different name than your own and references conversations that you don't remember having? What if you were go look at a mirror and see a face that isn't your own? If you said "Freak the fuck out" to any of the above three scenarios, then you are definitely not Col. Colter Stevens.

Yahoo! has posted the first five minutes of Source Code, Duncan Jones' newest film, in which Jake Gyllenhaal calmly tries to figure out what the hell is going on after waking up on a train he doesn't remember getting on. We learn later that he is actually part of an experiment that has put him in the body of someone else so that he can stop a terrorist attack.

Check out the clip below or in HD over at Yahoo!. For more on Source Code, head on over to our Blend Film Database.