There were four of them, student friends, and all namesakes are Dima. Everyone lived in a scientific town near Moscow, in the Soviet years called "science city". Two of them went into business, two remained in science. And one of them, Dmitry Kuzmin, was killed, and in the yard of the house where the other Dima lived, his boss Pilyugin .. And he was arrested on suspicion of killing Kuzmin .. A third friend, Mitya Khokhlov, does not believe that the murderer Pilyugin . He wants to establish the truth, despite his hardships - the theft of one hundred thousand dollars from his office, personal drama, well, let's say not very serious, rather annoying. Another lover brought him to the handle . And then their mutual friend Arina was beaten by some schmuck, allegedly because of the money of Kuzmin, who shortly before his death proposed to her and said that he was terribly rich. If he was killed because of the money, where did they come from a simple scientist, and who could know about them? Only someone close... And Khokhlov decided to find out who the killer was and who the thief was?