The grave of a man named Chou Shakurin has been disturbed in the Chinese countryside. A girl named Houhou, claiming to be the granddaughter of the grave's occupant, appears there. At the same time, Chou Soran, a student at a college in the city, has returned to the countryside to visit his grandfather Shakurin’s grave. He learns from the detective, Sou, that the grave has been disturbed and that his sister is there as well. Soran is surprised to learn that he has a sister, but goes to repair the grave. When he arrives, however, he finds Houhou digging up the grave. He tries to get evidence that she’s the grave robber, but when she finds him he runs away. Then he’s hit on the head and knocked out. When he wakes up, he sees people attacking Houhou, who fights them off with a knife. Shocked, Soran remembers what the detective told him… “Are you my sister!?” #'