Earl Stone (Clint Eastwood), is a man that due to financial hardship and the sheer desire of being accepted by his family and those around him, ends up working as a drug courier for the cartel, who quickly realise they are able to profit greatly from this elderly, frail man, that on first inspection poses no cause for concern for the United States law enforcement, who have designated a special team in hopes of cutting off the supply of drugs from state to state within the country.