An ancient manor in Crimea, which once belonged to Count Stomballo and his mysterious adopted daughter. According to legend, those who met in this manor will sooner or later find happiness in love. However, the “Dacha of Istanbul” is also associated with a legend about a treasure, which the count's adopted daughter hid somewhere in the house. And now a company of boys and girls bound together by complex ties of love and jealousy, friendship and betrayal sets out to hunt for the treasure. Egor, Anya, Anton, Yulia, Tanya and Vitya. They are determined to find the treasures of the Istanbul Dacha. But do they know what they will actually find there?