An iconic Director collaborated with the greatest Superstar of Bengal. And a classic was born. 43 years later, the film changed three lives forever. Arun Chatterjee, the reigning matinee idol of the Bengal Film Industry. Shubhobroto Mitra, an aspiring director who wants to remake Satyajit Ray's Nayak with Arun as the lead. And Srinandita Sen, an idealistic theatre actress and Shubho's live-in partner who gets cast as the journalist in the film. Autograph charts the journeys of these three lives, as they bond and separate through time and space, in two interwining narratives. That is, till their final tryst with destiny.