In 1972 Beirut, American diplomat Mason Skiles hosts a cocktail party accompanied by his wife and Karim, the 13-year old Lebanese orphan whom they hope to adopt. The festivities are disrupted when Mason’s best friend, CIA Agent Cal Riley arrives with startling information about Karim. Seconds later, terrorists attack the party with tragic results. Ten years later, Mason, now an alcoholic working as a mediator for labor disputes in Boston, gets approached by a stranger in a bar, who hands him a passport, cash and a plane ticket along with an urgent invitation from mutual “friends” that he travel to Beirut. Reluctantly, Mason arrives in Beirut only to find that the formerly picturesque city on the sea has become a violence-ridden warzone.