When Korea Highway Corporation is about to destroy the grave of O Gong-nyeo, the locals oppose the idea because they are worried of the legend of the grave. Heo, an engineer in charge of the construction, checks into a mountain lodge to investigate the legend. One night, he listens to O Gong-nyeo's grudge-filled story in his dream. However, he is too obsessed with his investigation and has been hallucinating. At last, he leaves the lodge and insists that the absurd legend is nothing but a superstition. He boldly pushes forward the construction project.