The film follows Pranav Mohanlal’s character Rohan, a wealthy Indian-American architect living comfortably in a Kerala villa. After hearing about the passing of his former classmate Kani, played by Sushmita Bhat, he visits her home and takes a hairclip as a keepsake. Soon after, unsettling supernatural events begin to occur, forcing him to question his sense of reality. The supporting cast comprises Gibin Gopinath, Manohari Joy, Arun Ajikumar, and Jaya Kurup.
Upon release, Diés Iraé earned strong critical praise. Despite receiving an A certificate for its gory content, it grossed Rs. 82 crore worldwide, becoming one of 2025’s top Malayalam hits.