In the previous life, Bo'er Jijin Cangye was a powerful demon master in the Northern Wilderness, but he was betrayed by his best friend and died. Zhuoga Ningshuang was a sword fairy saint in the Southern Region who died unexpectedly while exploring a secret realm. Her soul was devoured by an ancient sword, and she became a helpless sword spirit.
As soon as he returned to his youth, Cangye was reborn with the "Thousand Tribulations Body Refining System", vowing to tear apart the enemy with his own hands and reach the top again; Ningshuang was bound to the "Sword Soul Communication System" when she woke up, and was trapped in the broken sword. Her memory was incomplete, except for her obsession with the way of the sword.
Fate caused the two to meet unexpectedly - Cangye became Ningshuang's sword master, and Ningshuang became Cangye's natal sword. The two systems resonate, one person and one spirit. They are both symbiotic comrades and each other's shackles. They need to support each other in the bloody storm of the world of immortality: Cangye uses flesh and blood as a furnace to temper the sword body for Ningshuang; Ningshuang uses the soul of the sword as a guide to help Cangye break through the realm and kill the enemy.
When the broken sword regained its luster and the memories returned, they discovered that the death of the two lives was not an accident, and there was a conspiracy across the three realms hidden behind it. And this combination of "sword master and sword spirit" will be the thunder that overturns the old order, and it will also be the glimmer of light that rebuilds the path to immortality.
