Mansu runs a light repair business in Gwangju, and with justice and sincerity that does not compromise with society's injustice and corruption, he unforgivingly handles the crowds that confuse the Gwangju floor. One day, Mansu hears from his younger brother, Miss Kim, that his brother Cheonsu is missing, and sets out on the road to Seoul. Mansu, who moved to Seoul, conducted a search operation centered on the K market, where Cheonsu's boutique is located, and succeeded in rescuing his younger brother Cheonsu by eliminating Heodal's men, one by one, who are backing up merchants in this market. Mansu's idea of cursing corruption like an enemy is why Mansu plays a decisive role in eradicating the bats. Not only the market merchants but also the detective Jang thank Mansu for his cooperation.