From Pinoymanga Scans:
On the 24th Generation of Kings of the Joseon Dynasty, a boatman known as Seo-mok unknowingly helped Japanese spies who are disguised as Korean rich men along with a mysterious woman to cross a river. But after crossing the river, they tried to kill Seo-mok... Seo-mok then left with no choice hostaged the woman and soon secrets started to unfold.
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