Once known as a talented shaman, Kwon Hae-eon has now fallen into disgrace — a scammer making a living off fake rituals after losing his divine powers nine years ago. One day, a man named Moon Woojin, possessed by something unknown, suddenly appears and attacks him. But the moment their bodies come into contact, Hae-eon’s long-lost spiritual power mysteriously returns. Woojin, plagued by misfortune and with nowhere else to go, ends up staying in Hae-eon’s shrine. Each night, under the influence of the possession, Hae-eon uses Woojin’s body to connect with a mysterious entity. The next morning, Woojin wakes up with no memory of what happened—only the lingering signs of an intense night he can’t explain. For Moon Woojin, a devout Christian who has lived a chaste and upright life, realizing he has shared a night with another man is nothing short of a divine punishment. "Lord... just how much worse can my luck get? Why are You testing me like this...?"