Josef Nötzli has swapped his job as an accountant for a chicken farm in Switzerland. He wants to be just as successful as his twin brother John, who he believes runs the Aurora Hotel in Berlin. In reality, however, John is one of the biggest underworld bosses, and the "Aurora" is Berlin's most famous brothel. When John suddenly dies in Bangkok, Max, John's partner, wants to prevent anyone in Berlin from finding out about John's death at all costs. First, with Josef's help, he has to get the black money from the bank. Under the pretext of having to accept the inheritance, Max brings Josef to Berlin. Once there, of course, everyone believes that Josef is John, the feared underworld boss, and so a maelstrom of confusion ensues.

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