The hero of the film V.F. Mukhin, a former employee of the Central Committee of the CPSU, a participant in three wars; VF Mukhin's story about his life, work, hobbies. VF Mukhin in the studio of the Leningrad television talks about a new variety of corn, bred by him for 25 years, for cultivation in the Leningrad region. Musical instruments made by V.F.Mukhin. A customer selects a violin from a musical instrument store. Performances on the stage of the House of Scientists in Leningrad, a musical quartet. V.F.Mukhin gives the quartet's musicians to try out the instruments he created from polystyrene: the violin and the viola. Dialogue between V.F.Mukhin and musicians about V.F.Mukhin's musical instruments.