There were twelve of them - twelve huge, extraordinary purity and transparency diamonds, named after the signs of the Zodiac. But gradually all the exhibits of the unique collection were lost; in different parts of the world, billionaires and major collectors owned precious stones from the collection of the legendary “Zodiac”. No one expected that the stone from the Zodiac, the priceless Aquarius, would be found in one of the capital’s medical clinics. During the operation, the patient was found to have a container with a huge diamond sewn into her body. And they brought their new friend Olya to a private clinic, Vika Salieri and her husband Mark. Now they need to find out how the diamond got to the girl and for whom she transported it in such a strange way...