Sequel to the 1967 movie Hong Gildong. In the middle of the Yi Dynasty, when the government's national defense power was weakened and the people's livelihood was in ruin due to the actions of Tamgwan-ori, barbarians from the north began an invasion, putting the country's fortunes in jeopardy. Accordingly, Hong Jeong-seung, Hong Gil-dong's biological father and a member of the Left Council, organized the Hwalbin Party and recommended Hong Gil-dong, who had committed crimes against the country, to the king, and the king willingly appointed him as the vanguard of the Northern Expedition and sent him on a campaign. Hong Gil-dong fights bravely, defeats the barbarians, rescues his fiancée who was kidnapped by the barbarians, and returns home.