Clémentine Tango 1983 on netflix

Charles, the snobbish young scion of an aristocratic family that has seen better days, stumbles into the weird yet strangely attractive cabaret world while attempting to trace a former mistress of his father. He falls in love with Clémentine, an adolescent member of the cabaret “family” who has created her own tango-obsessed fantasy world amidst the surrounding decadence. Charles, learning that Clémentine might be his half-sister, and thus fearing an incestuous relationship, succumbs to the ambiguous seductions of two Machiavellian accomplices, a magician and a girl dancer.