You don't get a real good sense of what the film is going to be about, but according to the official synopsis, Cruise plays one of the last "few drone repairmen stationed on earth. ...whose soaring existence is brought crashing down when he rescues a beautiful stranger from a downed spacecraft. Her arrival triggers a chain of events that forces him to question everything he knows and puts the fate of humanity in his hands."
Don't you hate it when that happens to you?
And Morgan Freeman is in there somewhere in the film, and very briefly in this trailer, and of course you can hear him too: