Synopsis：A folk legend tells of Xiao Shen, a "Walking Yin" practitioner who can traverse the realms of the living and the dead and communicate with spirits. From his apprenticeship to mastering his craft, he encounters three supernatural incidents: a ghostly marriage and pregnancy, a substitute to ward off disaster, and a soul returning across generations. Using his ability to walk the yin realm, he resolves these eerie events. Along the way, he unravels the mysteries surrounding his initiation into the craft, coming to understand the truth that "people are both blessed and bound by emotions."