1933. A body has been found on a luxury airship en route from Berlin to Rio de Janeiro. Police Detective Bruno Brückner, travelling on board, is immediately asked to investigate—and soon discovers that the murdered man was not the proud Nazi he claimed to be. What's more, he was carrying a stash of banned 'degenerate' material. As Brückner interviews his fellow passengers—a wealthy baroness, an antisemitic doctor, a debonair Englishman—he realizes that each of them has something to hide. Uncovering the truth will reveal a story of secret identities, forbidden love and revenge, where nothing is as it appears.