Niti Taylor, a famous writer lives with her husband and actor Parth Samthaan, finds one diary in her old house. As her curiosity leads her to take it and read it. She found that diary really interesting and different. It was diary of some girl named Nandini Murthy indicating her love story with Manik Malhotra. How they met, fell in love and many experiences of her life which were connected to her. Will the love story of MaNan will solve problems between PaNi?