This ‘Man of Steel’ viral video from General Zod sheds a bit of high-level light on the film’s plot, beyond what the original trailer did. Piece the two together and the first part of the movie is Kal-El growing up, accepting who he is, and embracing the role of Superman. Then his past comes back to haunt him and he must save the planet from General Zod when that day of reckoning comes.
Unless Chuck Norris beats him to it. Either way.