The walls between dimensions tremble, ready to fall, while the ancient cult of Chi prepares to exact vengeance on an unsuspecting K'un Lun. Betrayed and alone, Daniel Rand must summon the will to save both the Eternal City and the young girl he has sworn to protect. But the final battle will not be in the bloodstained snow on a Himalayan mountaintop -- it will be fought within the dragon heart of Iron Fist himself.