As a CIA officer, Evelyn Salt swore an oath to responsibility, honor and u . S .. Her loyalty will be examined while a defector accuses her of being a Russian spy. Salt goes at the run, using all her abilties and years of revel in as a covert operative to elude seize. Salt's efforts to prove her innocence simplest serve to cast doubt on her motives, as the hunt to find the truth in the back of her identification continues and the query remains: "Who is Salt?"