In the late Chu Dynasty, Jinghe Town in the south of the Yangtze River was shrouded in a strange news - a bloody copper coin would be inserted into the heart of the deceased. The blood stains on the copper coin would flow over time and crawl like a living thing. It is rumored that this is the curse of "paying back money with green clams": those who are entangled with this money will not be able to escape the blood debt even if they lose all their money.
Su Zhenxue, a disciple who was expelled from Maoshan, passed by here. The black mist of resentful spirits and the evil smell on the copper coins she saw with her dark eyes made her smell a conspiracy that had the same origin as the death of her master. The new county magistrate Xie Yunzhou is investigating the old case of his father's mysterious death. He does not believe in ghosts and gods, but only believes in corpses and testimonies. However, when the autopsy knife cuts through the seventh corpse, he bumps into Su Zhenxue who is drawing talismans late at night.
One uses the blood contract technique to pursue murderers and can talk to resentful spirits; the other uses the technique of punishment to solve cases and is good at finding clues from account books and corpse stains. When the two are forced to join forces, from the blood-lettered documents in the abandoned Fenyin Pavilion to the green clam worms in the ancient wells in the town, they uncover not only the true identity of the "Blood Clam Lady" - Liu Ruyan, the wife of the richest man who seems to be hateful because of love, is actually a witch from the previous dynasty.
The copper coins are fishy, and the blood moon hangs in the sky. When Su Zhenxue's soul-soothing talisman burned out, Xie Yunzhou's sleeve sword pierced the fog; when she used her psychic blood as a guide to fight the mother insect for life and death, he held half of the "Yellow Spring Guide" to support her with a glimmer of life in the whirlpool of curses and secret treasures.
From the night talk in Jinghe River to the depths of the dragon vein, the chase that started with copper coins ended up as a redemption for two people across Taoism and the secular world, prejudice and trust. After all, the blood curse of green clam is never about money, but the obsession deep in the human heart - and the curse is to be solved
