After illegal excavations, ancient magical “Objects of Influence” fall into the hands of the “black archaeologist” Ilya Potekhin - a dagger, a ring and a bracelet that once belonged to the Ismaili leader Hassan al-Sabah, the founder of the sect of hashishid murderers (“hashish eaters”). Ilya hopes to profitably sell what he found, but the price of the treasures is the lives of many people, and St. Petersburg turns into a place of bloody battle between the Hashishin Arabs, their enemies - the descendants of the Knights Templar and St. Petersburg bandits for the right to possess the relics of the sect.