Looper

A futuristic science fiction thriller set in a world where time travel has been perfected. The government sends assassins back in time to eliminate dangerous criminals. Joe (Joseph Gordon-Levitt), a hitman who works for the mob. He, along with other "Loopers," kill and dispose of the bodies of people sent back in time from 30 years in the future. When Joe recognises one man as his future self (Bruce Willis), he hesitates, letting the man escape. Now, in order to save his immediate future, Joe needs to track down and kill his future self, while his future self is trying to find and kill a young boy who is the key to his survival in the future.