Andrey Vladimirovich Uglov, at 33 years old, decided to change his fate dramatically by agreeing to the position of director of a small advertising agency. Imperceptibly, step by step, he becomes close to one of the employees and begins to experience more than just friendly feelings for her. But is life really what it seems, or is it just a series of accidents and coincidences? Or maybe everything is already predetermined, and your pathetic attempts are not able to radically change anything? What secret does the green notebook contain?