After a job ends more violently than expected, Jack retreats to the Italian countryside and accepts one last assignment to construct a deadly weapon for a mysterious contact. But when he pursues a relationship with a beautiful local woman, he may be tempting fate by stepping out of the shadows. Jack soon finds himself in an escalating battle to escape from his secretive past.

An assassin known as a "Looper" discovers that he must kill his future self sent back 30 years in time by mobsters.