During the 300-year reign of the Tokugawa shogunate, the gold and silver produced by Sadu was an important guarantee of government finance and was known as "imperial gold". The gold was processed and transported to Edo through great hardships, but during the three-day journey, the raging reef became the main threat to gold carriers. In the winter of the second year of Tianbao, a gold ship was killed in the sea of Yueqian mackerel. The villagers of the nearby village of Heizaki picked up gold and silver, but soon the whole village mysteriously disappeared. Three years later, the ronin threatened Sun Bingwei (Nakadai Tatsuya) to be hunted, and the assassin was sent by Sun Bingwei's good friend with a knife, and then learned that the disappearance of the villagers was going to happen again. What kind of secret is hidden behind this?
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