Salt is a CIA Agent who has taken an oath to do her duty, defend her honour and serve her country. However, these are all tested when she is accused by a defector of being a Russian spy. She is forced to go on the run, and has to use all of her skills and years of experience in order to evade those who are after her and protect her husband. Her efforts to prove her innocence are fruitless, and the question burns ever greater as the plot unravels: Who is Salt?
