Casey Davies (Jesse Eisenberg) is a mild-mannered individual, no two ways about it and that personality is apparent in his day-to-day life consisting of a routine accounting job, taking care of his wiener-dog and absorbing every aspect of French culture he can. One night, Davies is attacked by a group of motorcycle-riding fiends who leave him brutally injured. Afterward, the perpetually terrified Davies looks for ways to defend himself, at first opting for a handgun before discovering a karate class run by Sensei (Alessandro Nivola, channeling Liev Schrieber in his terrific performance). Through learning this form of fighting in this dojo, Davies feels like he can finally take control of his life...and then things get prickly.
