After drinking too much alcohol, King Michael XXXVII promptly forgets his own wedding date! To avoid a scandal, his police minister asks the writer Peter Petroni, who looks deceptively like the king, to stand in for the alcoholic Michael at the ceremony. The only trouble is that the game quickly turns serious - because when Peter catches sight of "his" bride at the altar, it's love at first sight...

Shortages in postwar Berlin have created a blooming black market, and the goods rounded up during a major police raid all seem to come from the same source. The trail leads Commissioner Naumann to the Alibaba Cabarett, but he is unable to find conclusive evidence to convict its owner Goll.