the narrator is a businessman in his 30's and is bored by his business life and can't sleep. as a result, he created the tyler durden persona. he and tyler durden came up with the idea of fight club and project mayhem, a terrorist group made for men who are unhappy with consumerism. as the narrator slept one day, tyler vanished. he talked to people of project mayhem and they called him tyler durden. the narrator realized that he and tyler durden share the same body.