For many centuries, the mystery of the island of Atlantis has excited the minds of scientists, researchers and ordinary people around the world. Having reached its heyday, the highly developed civilization disappeared without a trace in one day. But did it really exist? Or is it a beautiful legend? Amateur detective Nadezhda Lebedeva was far from these disputes for the time being, but everything changed when she became involved in the investigation of strange and seemingly ridiculous thefts.