David Lord finds himself forced into the savage world of a modern gladiatorial arena, where men fight to the death for the entertainment of the online masses.
Jake (Sean Faris) moves to Orlando, Fla., with his mother (Leslie Hope) and brother (Wyatt Smith). He feels like an outsider in his new school and frequently lets his temper flare out of control. But Jake wants to fit in, and he decides to go to a party with his classmate Baja (Amber Heard). There, Jake is pushed into a fight and humiliated. Another classmate (Evan Peters) sees what happened, and encourages Jake to visit martial arts trainer Jean Roqua (Djimon Hounsou).
A depressed man (Edward Norton) suffering from insomnia meets a strange soap salesman named Tyler Durden (Brad Pitt) and soon finds himself living in his squalid house after his perfect apartment is destroyed. The two bored men form an underground club with strict rules and fight other men who are fed up with their mundane lives. Their perfect partnership frays when Marla (Helena Bonham Carter), a fellow support group crasher, attracts Tyler's attention.