Argo starts off with an unnamed narrator filling in the backstory on all the events that you are going to witness in its two hour running time. Its very simple, 6 american fugitives have taken refuge in a Canadian embassy while Iran is under siege from its citizens who are baying for the blood of their ex-president who has fled the country, and its up to the CIA to get them out.
Ben Affleck is Tony Mendez, a CIA operative who's job it is is to get the fugitives out of the country. His 'Best Bad Idea' is to pretend that him and the fugitives are a Canadian film crew scouting locations for a science-fiction epic called Argo. Along the way he recruits the great double act of John Goodman and Alan Arkin as two Hollywood insiders to help him make his fake movie seem believable.
However the film is not perfect, it doesn't always grip you in the way a movie like this should and it never feels like the stakes are that high. If you find yourself not caring about certain characters you will start to lose interest.