ALL WE IMAGINE AS LIGHT is the story of three women. Prabha (Kani Kusruti) works as a nurse at K L Ratan Hospital in Mumbai. Her husband dumped her and left for Germany. Prabha stays with a younger nurse, Anu (Divya Prabha). The latter is secretly in love with a man named Shiaz (Hridhu Haroon) and she has kept the relationship fiercely private due to their religious differences. Prabha’s friend and confidant in the hospital is Parvati (Chhaya Kadam), a cook who is facing eviction from her decades-old residence from a builder. Prabha tries her best to help Parvati in her fight, but the effort proves futile. Parvati decides to leave Mumbai and return to her hometown in Konkan, Maharashtra. What happens next forms the rest of the film.