Dave Buznik is a mild-mannered executive who struggles with low self-esteem and unexpressed anger. After a misunderstanding on a flight, he is arrested and sentenced to an anger management program to avoid jail time. His instructor, Dr. Buddy Rydell, is unorthodox and confrontational, pushing Dave to his limits with unusual and often humiliating exercises. Despite his resistance, Dave must learn to cope with his hidden rage and open up emotionally, while also dealing with his complicated feelings for his girlfriend, Linda.

As the program progresses, Buddy's methods become increasingly invasive and unpredictable, challenging Dave's patience and sanity. He finds himself in a series of absurd and embarrassing situations, from public confrontations to bizarre therapy sessions. The pressure mounts as Dave's personal and professional life begins to unravel, forcing him to confront his deepest insecurities. Along the way, he must navigate his complex relationship with Buddy, who seems to be more than just a therapist, and figure out how to regain control of his life and emotions.