Tish delves into the life and work of British photographer Tish Murtha, renowned for her poignant black-and-white images capturing the struggles of working-class communities in Northeast England during the 1970s and 1980s. Through the lens of her daughter, Ella Murtha, the film explores Tish's unwavering commitment to social justice and her efforts to shed light on the impacts of deindustrialization and austerity policies on her community. Despite facing personal hardships and professional marginalization, Tish's legacy endures, highlighting the power of photography as a tool for advocacy and change.