The film is about a day of the 19th-20th century famous tycoons from Baku Agha Musa Naghiyev and Hadji Zeynalabdin Taghiyev.
Russian mobster Yuri's man Nikolai betrays him, steals the map of the famous "Heart of the East" diamond and flees to Istanbul. Yuri sends his men to Istanbul after Nikolay. By chance, the map falls into the hands of 3 wandering Turks Derya, Tayfun and Sedat.
