After his mother's death, a baby born inside the coffin was said to have survived by absorbing the corpse's aura-an ill omen known as the "coffin child."

Gu Jiu, transported from the modern era, inhabited the dead infant's body. His soul failed to fuse perfectly with the flesh, leaving him drenched in dark energy-a prime feast for malevolent spirits. Only by consistently performing good deeds and accumulating merit could he stabilize his soul and endure.

Shao Yi, born with an innate golden-metal aura, possessed excessive yang energy that made him violent and destructive to both others and himself. To balance this force within him, he traveled the world since childhood with his Taoist master, capturing ghosts and gathering yin energy.

This is the story of a husband and husband teaming up to exorcise ghosts, perform good deeds, and accumulate merit to extend their lives.