Iron Man’s entire plot was revealed in the first scene of the movie.
Spoiler Alert! In the opening scene of the very first of the Iron Man films in the modern trilogy, Tony Stark is being held captive by terrorist in a cave somewhere in Afghanistan. The men keeping him are seen shooting a video and speaking in their own language without and subtitles for the viewer. As we watch this unfold, we can safely assume they are merely asking for a ransom or making deals in return for Stark. However, if you are one of the 65 million plus people in the world who speak Urdu you would be in for quite a spoiler. They reveal their entire plan, and thus, the whole plot of the movie.
Later, we find this out when Tony Star has the video translated and it is shown to us, the audience, what our fellow Urdu speaking have already long known, that these terrorists were actually, in fact, in cahoots with Stark’s business partner and supposed friend all along.