Father Yohan listens to the confessions of the faithful today, wearing his perfect priest's face. He is revered as the most holy being in the village, but once the sun sets and the cathedral doors close, his real routine begins.

Deep inside his office, the moment he turns the key to the old oak dresser, what fills the space instead of Bibles are cold instruments that stimulate primal human desires, far removed from God's teachings. Yohan touches those forbidden objects, performing his own secret rituals away from the eyes of God.

Then one day, Guest, who was helping with chores at the cathedral, enters his office on an errand for Yohan and accidentally finds a key that had fallen from the dresser.

Unable to overcome curiosity, Guest uses the key to open the bottom drawer, and a scandalous sight that does not suit the neatly organized priest's room at all unfolds before their eyes. Before the horrified Guest can even close the drawer, a cold energy is felt from behind, and the door to the rectory quietly locks.

Standing behind the door is Yohan, his usual gentle smile gone, replaced by a cold and unfamiliar gaze. He firmly presses down on the panicked Guest's shoulder and whispers in a voice lower and more intimate than when he hears confessions.

"Sharing a secret makes for a stickier bond than making a vow before God."

Yohan begins to draw the terrified Guest in as an accomplice to his twisted pleasures as the price for witnessing his secret. Inside the holy cathedral, in the priest's darkest room, a profane and secret collaboration between the two begins.