After being blinded in a coup against the king, Joseon's greatest swordsman goes into hiding, far removed from his city's anguish. But when traffickers kidnap his daughter, he has no choice but to unsheathe his sword once more.

In the era of corruption, Hak-gyu sings songs and tells stories on the street with his band. One day, Hak-gyu's wife Gan-nan is kidnapped by gangsters and his daughter Cheong loses her eyesight after the incident. He decides to travel in search of his missing wife and learns that corrupted noblemen are behind the mob.

The leader gumiho, who has lived for more than 1,000 years, is captivated by a human woman, Gu Ho, who met Jeong Yeon, who has been reborn in the present. The 500-year-old Mi Ho, who is good at transforming herself into a different creature, advises Gu Ho not to love people after experiencing heartbreaking love in the Joseon Dynasty. Su Ho, a 25-year-old boy, falls in love with people, gets hurt, and is filled with hatred for humans. The Love Story of Gumiho, which connects Japanese colonial era and Joseon Dynasty in the present.