Tyler plans to blow up a skyscraper using homemade bombs created by Project Mayhem; the target of the explosion is the nearby national museum. Tyler plans to die as a martyr during this event, taking the narrator's life as well. Realizing this, the narrator sets out to stop Tyler.
The narrator makes his way to the roof of the building, where Tyler holds him at gunpoint. When Marla comes to the roof with one of the support groups, Tyler vanishes, as Tyler "was his hallucination, not hers".
With Tyler gone, the narrator waits for the bomb to explode and kill him. The bomb malfunctions because Tyler mixed paraffin into the explosives. Still alive and holding Tyler's gun, the narrator puts the gun in his mouth and shoots himself.
Some time later, he awakens in a mental hospital, believing he is in Heaven, and imagines an argument with God over human nature.
The narrator is then approached by hospital employees who reveal themselves to be Project Mayhem members. They tell him their plans still continue, and that they are expecting Tyler to return.
