Jack (played by Edward Norton) is an employee of a large automobile company, suffering from severe insomnia and filled with crisis and hatred towards everything around him. By chance, Jack meets a soap salesman named Tyler (played by Brad Pitt), a rebellious, cruel, and fierce anti-hero, and moves into Tyler's dilapidated home after his apartment is set on fire. The two become good friends through a twist of fate and establish the 'Fight Club': an underground organization where people engage in bare-knuckle fighting without protective gear, aimed at venting emotions. The club attracts more and more people, gradually developing into a nationwide underground organization, with Tyler charmingly drawing in blind followers. Members of the club engage in various acts of violence and destruction, and Tyler's behavior becomes increasingly insane. Jack grows increasingly intolerant of the state of the 'Fight Club' and Tyler's actions, leading to a confrontation with Tyler, who then leaves him. However, Jack realizes that he cannot escape Tyler's shadow no matter where he goes, prompting him to ponder: Who am I?