66 Sadashiv is an emotional yet humorous story of Prabhakar Shrikhande, a typical Punekar who starts an institute to spread the awareness about mastering the techniques of a new art form and is trying to gain recognition for the same.

66 year old Photographer Prabhakar Shrikande lives a middle class life with his wife Meena and daughter Kadambari in Pune.His wife Meena is much worried about their daughter Kadambari's marriage,on the other end Shrikande's studio isn't doing well has he has reused to adopt digital photography.Shrikande is famous for getting into arguments for petty reasons with the society.As his studio isn't doing well he decides to set up an institute to teach his skills.—[email protected]

Prabhakar (Mohan Joshi), a Punekar photographer, known for his quick wit and love for spirited arguments embarks on an exciting venture by starting tuition classes centred around the art of arguing, which he dubs 'structural argument studies' deeming it the 66th art form. His entertaining journey to gain recognition and get the syllabus included in curriculum courses unfolds with wit and humour.