Sawol, the son of a gisaeng who was on his way to the village, is sold as a playboard for engaging in promiscuous sexual activities after the death of his mother, who was his only family member. There, Sawol meets a friendly man named Hanul and is relieved that he has found a new home. However, except for Hanul, the people in the playboard say that Sawol seems to have a different plan, but Sawol can go outside at night and not sing. If you do that, the fox ghost will eat you.

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