Okay. Pay attention.
A Looper is someone who lives in 'present day'.
Got it so far? Awesome.
In the future...Crime syndicates send people can for the Looper's to kill.
They just sort of 'ping-appear' in front of the Looper and the Looper shoots 'em dead. Simple.
However, things turn to crap when someone known as The Rainmaker wants to close all the loop-holes and starts to send back the future versions of The Loopers and that's the basics of this film:
Joseph Gordon-Levitt is getting ready to terminate his new assignment when suddenly Bruce Willis (the future version of Joseph thanks to some clever and subtle make-up) appears in front of him. Naturally it's Bruce so he gets away and decides to hunt down The Rainmaker. He figures, kill The Rainmaker and Looper's will never get terminated meaning everyone can go on and live their lives in full and happiness. Or some bollocks like that.
Chased by the people who don't really fancy Future people running around the present, and chased by the present-day version of himself this is an intelligent film with good action, solid acting and a good story.
A little bit Sixth Sense (boy stuff) and a little bit Terminator (future dude tracking down people in present to save future blah blah) this is well worth catching at the cinema.
Nice to see Willis heading back to 'decent' film territory too. Recent films have been getting progressively worse!
Warning: Don't take 'thick' people to see this. They'll be forever asking 'how' and 'why'.