Investigative reporter Ji Yao receives an anonymous letter, implying that the serial murders in her hometown of Songlin Town are related to her mother, who has been missing for fifteen years. She returned to the town and found that each corpse was kneeling in the posture of a "penitent", with the little finger of the right hand cut off, and a mysterious ○△ cross symbol painted on the side. With in-depth investigation, Ji Yao uncovered a seamless conspiracy spanning twenty years...
Concept: When technology becomes a new religion, the womb becomes an altar