The Secret of the Black Dragon (1985)

Augsburg in 1648. After the Thirty Years' War, hunger and plague rage. The trading house Fugger is in need; many ships are seized by pirates. Jesuit Father Pereira, who wants to return to the Beijing mission, knows what to do: a new land route to China. Led by Roggenburg, head of the Fugger office in Moscow, seven men make their way to the border river Amur. Thousands of kilometers are ahead of them - wild land.