The movie ???Tabu - Es ist die Seele ein Fremdes auf Erden??? is the story of a poet, who wants to be world famous with his poems. During the time of 1908, he starts making relationship with his own sister. He was not aware with the fact the thing that he is doing is wrong. His sister was a great musician. She plays piano. After some time, both of them realizes that the connection between them is wrong and it may lead to unwanted results. To solve this issue, he forces his sister to marry her professor. She doesn???t want to marry her professor because he is elder than her. What will she do now?