Iron Man 2 is able to build onto its predecessor from two years prior while paving the way for an expanded Marvel Cinematic Universe. The sequel takes place a few months after the events of the first film. The world now knows Tony Stark is a superhero. Stark himself is having some other issues to worry about such as the fact that the palladium core in the device keeping him alive is also killing him. …"Iron Man 2 – The Road to Endgame"