Sabretooth first slashed his way into the pages of Marvel comics back in Iron Fist #14 and never looked back. But now Danny Rand, the legendary Iron Fist, has a problem only Sabretooth can help him solve. Something is threatening the very existence of K’un-Lun, and the Iron Fist must do whatever he can to protect it, even if it means convincing his old enemy to fight by his side. Will mutant claws and crane kicks be enough to save K’un-Lun?