After one of his revenge plots lands him in court, Dan is sentenced to a stint in an Anger Management class as rehabilitation. Desperate to get out of it, Dan sabotages everything in class left and right, to no avail. So instead he sets his sights on breaking down the class leader – a perky, by-the-book lady named Amber who seems immune to his various attempts at subterfuge. But soon Dan’s behavior flips a switch in her head and she proves to be a lot less stable than originally assumed. With her rampaging id unleashed, she sets out on a city-wide destruction spree, and blackmails Dan into being her partner in crime!