The story takes place in "Luoxia Village" in the deep mountains of southern Hunan. The village is backed by the "Mass Burial Ridge". The taboo of "ghosts taking wives on the 15th day of the seventh lunar month" has been passed down from generation to generation - every year on the 15th day of the seventh lunar month (the Ghost Festival), if there is a "yin year and a cloudy month" in the village, For an unmarried woman born at the right time, the ghost groom will send "yin men" (paper figures, shadows, monsters, etc.) To "welcome" her. The selected woman will mysteriously disappear in the early morning of the next day, leaving only a strand of black silk and a red wedding dress. The villagers were convinced that this was a "mountain god exchange of sacrifices" and did not dare to resist. They could only pray for peace through the "yin sacrifice ceremony", but no one was able to prevent the tragedy.
