In the movie, Norton starts slacking off at work. Pitt already seems to have entered the twilight zone, making pricey soap out of human fat he steals from bins outside liposuction clinics. The two make a mockery of normal trade and commerce. So it's no surprise when they launch an urban fight club, men meeting in dark places and pounding each other into submission with bare knuckles.
Clubs soon sweep the nation.
Rallying against what they perceive as the emasculation of the modern male, these individuals mistake brute strength for manhood. Bloodied faces and broken bodies become badges of honour. Women are reduced to psychotic sex machines, represented here by Helena Bonham Carter, who's made up and dressed up like a mosh pit freak. She beds Pitt in purely physical, unfettered, animalistic encounters that put the primal scream back into orgasm. The sequences involve some nakedness but are not explicit and play more funny than frank.