Xie Zhaohun, a soul-collector who shuttles between the Yin and Yang worlds, is cold and ruthless, and is responsible for carrying out missions in the underworld. However, when he meets Tang Yihe, a tarot card fortune-teller with a yin-yang eye, their worlds begin to intertwine. The two people who originally had no intersections met all kinds of mortals along the way, some were righteous and some were evil, some had faith and some were confused, and they were all entangled in love, hatred, and vengeance. At the same time, the soul-collector Xie Zhaohun was gradually attracted by Tang Yihe's enthusiasm...