Just when everything seemed to be ending so well—like any ordinary workday. And then, of all people, Natylko the caretaker of the dacha cooperative brings news: a young man’s body has been found. Lev Zuev has been murdered—an инвалид (disabled man) who not long ago moved from Novosibirsk, a radio technician. He was also interested in making copies of recordings by popular performers. Anton Biryukov and his colleagues must unravel a new criminal case.