The old gypsy Zambila had the same dream every night: a stranger appeared to her and asked her to find an earring of good luck. The amulet should have been returned to the gypsy saint Sarah Kali, who is angry that the earring is wandering around the world and helping to do evil. Zambila, a powerful sorceress, managed to trace the wanderings of the earring over the centuries. Once it belonged to François Vidocq himself, a French criminal who became a famous detective, and it was the gypsy earring that brought him incredible luck in everything he did, but in the end it was she who ruined him... As Zambila found out, now the earring good luck lies with the banker, whose affairs are rather doubtful, but are going uphill. But how can you take away his amulet, which is guarded better than any treasure? And then the old sorceress caught the eye of Galka, the daughter of a dissolute market trader...