A tragic love story took place in Istanbul during the armistice years. Mediha who lives in Sisli region of Istanbul breaks up with Kemal however Kemal is still in love with Mediha and Kemal starts to work as a servant at the house where she lives with her new boyfriend. One day Mediha is murdered and her new boyfriend loses his memory due to this assault. And then, things get more complicated.

To climb Mount Kamir-Sar, whose inaccessible summit, according to the findings of young scientist Artashes Malyan, contains a rare deposit of mercury and silver, an expedition led by Malyan is organized despite the opposition of the venerable Professor Daniel-bek. Information about the daring expedition of Soviet scientists reaches Alvarets da Cortez, the owner of one of Europe's largest chemical companies. In his youth, he visited this peak and, in order to hide the discovered metals, threw the Russian scientist Shelagin into the abyss, silencing Daniel-bek. Foreign intelligence is tasked with disrupting the expedition...