Once a generation, the Seven Capital Cities of Heaven align on a plane far beyond the ken of mortal men. It is here that these cities send their Immortal Warriors to compete against one another in a combat tournament to end all tournaments.

The Book of Iron Fist, written on parchment made from the dragon scales of Shou-Lao the Undying, tells the life stories and kung-fu secrets of every man and woman ever to hold the mantle of the Immortal Iron Fist - except one, Orson Randall, the Golden Age Iron Fist, and he died as he lived: trying to outrun the Iron Fist legacy.