Saw the trailer for this when I went to see Inception. I can prolly give a plot summary of the entire movie just from seeing the trailer:
A bunch of bank robbers live in this one area,
Affleck is a cop whose job it is to stop these bank robbers,
Affleck's dad is heavily involved in the bank robbing scene and won't let his son stop it,
Affleck is probably in a relationship with a girl bank robber,
Affleck becomes a dirty cop/bank robber,
For the ending, he'll either come to his senses and put an end to the bank robbing, or be a part of one of the biggest bank heists in history, and/or die.
I miss anything?