The illegitimate son of a nobleman, banished from his family due to the predictions of a fake prophecy, witnesses firsthand the injustices of society. Along with his sidekick, Chadol Bawi, he defeats a corrupt magistrate and returns stolen money to the poor. But when the magistrate brings in more forces, Hong Gil-dong must retreat to the mountains and train under a wise wizard. His sanity is put to the test through vigorous training, but years later he emerges to rally the local rebels in an attempt to unseat the corrupt aristocrats. However, with the magistrate having grown even more powerful, will Hong Gil-dong and his band of merry men be able to save his father and all of Korea?