Joseph Gordon-Levitt: 'Looper' Comic-Con Panel with Emily Blunt

Joseph Gordon-Levitt and co-star Emily Blunt are all smiles during the Looper panel held during 2012 Comic-Con held at San Diego Convention Center on Friday (July 13) in Calif.

Before heading inside, the 31-year-old actor and Emily, 29, greeted fans and signed autographs.

PHOTOS: Check out the latest pics of Emily Blunt

Here’s a synopsis: Time travel will be invented – but it will be illegal and only available on the black market. When the mob wants to get rid of someone, they will send their target 30 years into the past, where a “looper” – a hired gun, like Joe (Gordon-Levitt) – is waiting to mop up. Joe is getting rich and life is good … until the day the mob decides to “close the loop,” sending back Joe’s future self (Bruce Willis) for assassination.

Looper hits theaters September 28!

FYI: Emily is wearing a Christian Dior dress and Sergio Rossi shoes.

10+ pictures inside of Emily Blunt and Joseph Gordon-Levitt at Comic-Con…