Gunman in Joseon

It is the late Joseon period, and a mysterious gunman kills the noblemen that support enlightenment in broad daylight. Emperor Gojong secretly orders Park Jin Han, Joseon\u2019s greatest swordmaster, to chase after the mystery gunman. Meanwhile, Park Jin Han\u2019s son, Yoon Kang, who wastes most of his days at gisaeng houses, runs into someone who might be the mystery gunman and goes after him.

Yoon Kang is skeptical of Soo In, but out of his interest in her, he helps Soo In, who is doing everything she can to deliver her teacher\u2019s book to Master Oh Kyung. The misunderstandings and sour feelings built up for each other make the journey difficult when the gunman\u2019s shadow slowly approaches the two.

Yoon Kang and Soo In go through some seriously difficult and life-threatening moments together, and mixed feelings grow. Yoon Kang\u2019s jealousy peaks when Ho Kyung returns from his studies in Japan. But Soo In asks Yoon Kang out on a nightly walk to thank him for everything, which brings the two closer together. Yeon Ha, Yoon Kang\u2019s younger sister, disappears out of the blue.

Yoon Kang and Jin Han fight against the gunmen to save Yeon Ha, Yoon Kang\u2019s sister, but things do not go so smoothly as their swords are powerless against the modern guns of the gunmen. Meanwhile, Second Vice-Premier Kim Byung Je tries to charge Jin Han with treason to convince the emperor against enlightenment.

Yoon Kang is back in Joseon, and people are stunned to see him come back alive after thinking he is dead. However, the man is not Yoon Kang but Han Jo, who looks and acts Japanese from head to toe, visiting Joseon as a merchant. Choi Won Sin approaches Han Jo and tries to get him to invest in mining projects.

Pretending to be Han Jo is not so easy as Soo In recognizes Yoon Kang. To prove her wrong, Yoon Kang does all sorts of odd things to show he is Han Jo and not Yoon Kang. Yoon Kang pushes forward with investigating what happened in the past. While doing so, he again encounters Kim Moo Duk, the gunman.