Seo Won-seop

A bumbling but good-hearted hero, Hyung-rae, becomes entangled in a conspiracy involving foreign agents, corrupt officials, and rival martial artists during Korea’s historical era. After coming across an injured warrior who warns of Japanese spies, Hyung-rae finds himself caught between competing factions seeking power. As assassins, warriors, and schemers collide, Hyung-rae and his companions stumble through a series of comedic misadventures, ultimately becoming unlikely heroes in a chaotic battle of loyalty, deception, and martial arts spectacle.

Hyung-rae, the three musketeers, and Sol are students of Master Ttaengcho. While gather wild greens in the mountains they witness a sword battle where Yoshimura Genjo displays amazing swordmanship. Upon hearing this Ttaengcho tells the students of his three greatest disciples in the past: Mu-cho of Korea, Peng Jia of China, and Yoshimura Genjo of Japan. All three harbor ambition to conquer the martial world, but are kept in check by the others. However, Mu-cho of Korea has now disappeared along with the power of the Golden Mask.

Sol-i and Song-i head toward Hanyang (Seoul) carrying the blueprints for a cannon invented by their father. Along the way, they run into bandits and fall into danger, until Baek Du-geon appears, defeats the bandits, and rescues them. Upon arriving in Hanyang, Sol-i and Song-i hand the cannon and blueprints over to Vice Minister Hong, while Baek Du-geon and the Three Bug Musketeers become constables, causing a huge commotion. However, Vice Minister Hong—now in possession of the blueprints—conspires with the Police Chief to sell them off to a Japanese spy (Miyamoto). As Baek Du-geon and the Three Bug Musketeers set out to stop them, a massive, bloody battle erupts against the Japanese spy and his ninjas.