Harbour policeman Hans and his companion rescue a young woman from water during their night watch, to find out she is connected with a jewel robbery in which a gangster now owner of an hippodrome, an out jailed one and his mistress now mixed up with an American millionaire weave some obscure plans.
A young woman causes a fatal accident. She flees the country, only to get caught in the net of Brasilian traffickers.
The star of an operetta is engaged to its elderly director but really loves a dashing young Bavarian she met at a masked ball.
