According to legend, the Egyptian queen Cleopatra owned a magical necklace in the form of papyrus flowers alternating with large pearls. The necklace gave the queen power over the man's heart. It was with his help that Cleopatra first conquered Caesar, later Mark Antony, and retained power over Egypt... Egyptologist Sergei Purgin turns to private detective Valery Tavrov with a request to follow his wife, Olga. The detective understands that there is some mysticism here; very strange events are happening around the Purgins. When an attempt is made on Olga’s life, and the main suspect - her husband - mysteriously disappears from prison, Tavrov is finally convinced: the culprit is a gold necklace of the finest workmanship, which was often seen on Olga’s neck...