Kim Yeon-so, who enjoyed a game called Cult Simulator, and fell in love with it, knew that this world was going to end. The setting of the story is the megalopolis Metropole. Five denominations were vying for supremacy in the city And Kim Yeon-so became one of the five denominations, Charles, the leader of the Unknown Church. The worst thing is that other denominations worship a real evil god, but the Unknown Church believes in a fake god created by Charles, the Existential. It was a true cult among cults. Will Charles be able to survive and avoid the predestined doom ending?