Reindeer Games is a dramatic thriller that stars Ben Affleck and Charlize Theron. Ben Affleck plays Rudy, a criminal who has been imprisoned from over six years for stealing automobiles. Rudy and Nick, another prisoner, are on the verge of being paroled. Nick has survived his many years in prison by becoming pen pals with a woman on the outside. Nick has started to have romantic feelings for her and his constant declarations of love drive Rudy crazy.
Shortly before their parole is to be granted, a massive riot breaks out in the prison. Nick is killed but he manages to save Rudy's life before he dies. Rudy decides to steal Nick's identity and go and meet Nick's pen pal. It turns out Ashley, the mysterious pen pal, is the sister of a man, Gabriel, who is determined to steal from a casino. Before Nick went to prison, he worked in casinos and Ashley has been stringing him along this whole time in order to get him to help her and her brother out. The goal of the gang to do a heist at the casino where Nick used to work. Unfortunately for Rudy, no one realizes that he is not Nick and he is forced to go along with the plan. Otherwise, the gang will kill him.
Thankfully, because they spent so much time locked up together, Rudy remembers a lot of the things Nick used to tell about working in a casino. He is able to use what his old cellmate told him and devise a surefire plan to successful steal from the casino. Rudy knows that there is a giant safe in the casino that holds the most assets. He and the gang dress in Santa Clause outfits as disguises and begin the heist. Rudy takes the time to arm himself since he believes Gabriel will try and kill him when the heist is over. He then discovers that Gabriel and Ashley are really lovers not siblings and he realizes he has been had.