Dennis Jennings (Steven Wright) is an introvert, showing symptoms of obsessive-compulsive disorder, anxiety, paranoia, and a troubled youth. He works as a waiter and has an indifferent girlfriend, Emma, who only seems to patronize him. The "appointments" are with his psychiatrist (Rowan Atkinson), who is annoyed with him and uninterested in what he has to say. After finding his doctor sharing his (Dennis's) intimate secrets with a group of fellow psychiatrists at a bar, and then finding that his girlfriend is cheating on him with the doctor, Dennis decides he has had enough. He hunts the doctor, shoots him, and goes to jail afterwards.