After a troubled childhood and two failed marriages, Rena Greenblatt has achieved success as a photographer. She specializes in infrared techniques that expose her pictures' otherwise hidden landscapes and capture the raw essence of deeply private moments in the lives of her subjects. Away from her lover, and stuck in Florence, Italy, with her infuriating stepmother and her aging, unwell father, Rena confronts not only the masterpieces of the Renaissance but the banal inconveniences of a family holiday. At the same time, she finds herself traveling into dark and passionate memories that will lead to disturbing revelations. Infrared is both an explicitly bold story of how sexuality is influenced by childhood, family, and culture, and a portrait of a woman coming to terms with the end of her father's life.