In the year 2047 time travel has yet to be invented. Thirty years later, however, it has. Though immediately outlawed, time-travel technology is quickly appropriated by the mob, and used to cleanly dispose of anyone deemed a threat. The process is simple: When the mob wants someone to disappear, they simply send them back to the year 2047, where an assassin known as a "looper" quickly carries out the hit, and disposes of the body. Joe Simmons (Gordon-Levitt) is one of the most respected loopers around. Each kill earns him a big payday, and he's got big plans to retire to France. Then, one day, as Joe patiently awaits the appearance of his next target near the edge of a remote corn field, he's shocked to come face-to-face with his future self (Bruce Willis). When the younger Joe hesitates, the older Joe makes a daring escape. Now, in order to avoid the wrath of his underworld boss (Jeff Daniels), young Joe must "close the loop" and kill his older counterpart. Meanwhile, the revelation that a powerful crime boss in the future has set the underworld ablaze pits the two Joes on a violent collision course, with the fate of a devoted mother (Emily Blunt) and her young son hanging in the balance.