The story is set in the misty, tranquil hills of Kerala, creating a naturally claustrophobic and chilly atmosphere. It follows (Kunchacko Boban) and his wife Reethu (Jyothirmayi). Eight years prior to the events of the movie, the couple suffered a devastating car accident. While they survived, the trauma left Reethu with severe retrograde amnesia, fracturing her reality and forcing her to live in a fragile, highly guarded mental state.