《홍길동전》 is a classic Korean novel written by Heo Gyun in the early 17th century. The story follows the life of Hong Gil-dong, a son of a nobleman who is born as a illegitimate child. He faces discrimination and struggles against social injustice, eventually becoming a heroic figure who fights for the oppressed. Throughout his adventures, Hong Gil-dong uses his intelligence and skills to challenge corrupt officials and help the poor. The novel explores themes of identity, social class, and morality, making it a significant work in Korean literature that reflects the societal issues of its time.