The youngsters Matahi and Reri are in love with each other. The old warrior Hitu announces that Reri is to be the new chosen virgin for the gods. This means she must stay untouched, otherwise she and her lover will be killed. But Matahi abducts and escapes with her to an island ruled by the white man, where their gods would be harmless and powerless. Tabu is the last film from director F.W. Murnau; he died before the film’s premiere in a car accident.
Lem goes to Chicago to sell the wheat his family has grown on their farm in Minnesota. There he meets the waitress Kate. They fall in love and get married before going back to the farm. Kate is accepted by Lem’s mother and kid sister but is rejected by his father, who believes she married for the money. (And the fact that Lem didn’t get a fair price for the wheat is her fault too). The reapers arrive and quickly they make things even more complicated by making their move on Kate. Lem misunderstands the situation and believes Kate is actually interested. In despair Kate leaves the farm and Lem goes looking for her.
The likeable and carefree Grand Duke of Abacco is in dire straits. There is no money left to service the State’s debt; the main creditor is looking forward to expropriating the entire Duchy. The marriage with Olga, Grand Duchess of Russia, would solve everything, but a crucial letter of hers about the engagement has been stolen. Besides, a bunch of revolutionaries and a dubious businessman have other plans regarding the Grand Duke. With the intrusion of adventurer Philipp Collins into the Grand Duke’s affairs, a series of frantic chases, plots and counter-plots begins.