After the death of the great philosopher Goethe, unpublished notes from his diary remained, which ended up in the possession of his longtime admirer Anna Pavlovna Filosofova. She was able to pass them on to her friends in Russia... An elderly teacher, Sofya Argunovskaya, was killed, and the killer was carefully looking for something in her apartment. Sonya’s friends have no idea what the unknown might need from the old woman. But perhaps this has something to do with Argunovskaya’s past and her mentor, who bequeathed this apartment to her. In Sophia's apartment there is a Goethe collection album with a torn out title page - there was a dedicatory inscription in which the location of a unique treasure is encrypted...